diff --git a/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp b/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp
index 1681b4073..8853c7bba 100644
--- a/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp
+++ b/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp
@@ -16,6 +16,7 @@
 		along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "groupterminalscommand.h"
+#include "../../utils/qetutils.h"
 
 /**
  * @brief GroupTerminalsCommand::GroupTerminalsCommand
@@ -24,8 +25,8 @@
  * @param to_group : Terminals to group
  */
 GroupTerminalsCommand::GroupTerminalsCommand(TerminalStrip *strip,
-											 const PhysicalTerminalData &receiver_,
-											 const QVector<QWeakPointer<RealTerminal>> &to_group,
+											 const QSharedPointer<PhysicalTerminal> &receiver_,
+											 const QVector<QSharedPointer<RealTerminal>> &to_group,
 											 QUndoCommand *parent):
 	QUndoCommand(parent),
 	m_terminal_strip(strip),
@@ -37,18 +38,18 @@ GroupTerminalsCommand::GroupTerminalsCommand(TerminalStrip *strip,
 
 void GroupTerminalsCommand::undo() {
 	if (m_terminal_strip) {
-		m_terminal_strip->unGroupTerminals(m_to_group);
+		m_terminal_strip->unGroupTerminals(QETUtils::sharedVectorToWeak(m_to_group));
 	}
 }
 
 void GroupTerminalsCommand::redo() {
 	if (m_terminal_strip) {
-		m_terminal_strip->groupTerminals(m_receiver, m_to_group);
+		m_terminal_strip->groupTerminals(m_receiver, QETUtils::sharedVectorToWeak(m_to_group));
 	}
 }
 
 UnGroupTerminalsCommand::UnGroupTerminalsCommand(TerminalStrip *strip,
-												 const QVector<QWeakPointer<RealTerminal>> &to_ungroup,
+												 const QVector<QSharedPointer<RealTerminal>> &to_ungroup,
 												 QUndoCommand *parent) :
 	QUndoCommand(parent),
 	m_terminal_strip(strip)
@@ -62,7 +63,7 @@ void UnGroupTerminalsCommand::undo()
 	if (m_terminal_strip)
 	{
 		for (const auto &key : m_physical_real_H.keys()) {
-			m_terminal_strip->groupTerminals(key, m_physical_real_H.value(key));
+			m_terminal_strip->groupTerminals(key, QETUtils::sharedVectorToWeak(m_physical_real_H.value(key)));
 		}
 	}
 }
@@ -72,24 +73,26 @@ void UnGroupTerminalsCommand::redo()
 	if (m_terminal_strip)
 	{
 		for (const auto &value : qAsConst(m_physical_real_H)) {
-			m_terminal_strip->unGroupTerminals(value);
+			m_terminal_strip->unGroupTerminals(QETUtils::sharedVectorToWeak(value));
 		}
 	}
 }
 
-void UnGroupTerminalsCommand::setUp(const QVector<QWeakPointer<RealTerminal>> &to_ungroup)
+void UnGroupTerminalsCommand::setUp(const QVector<QSharedPointer<RealTerminal>> &to_ungroup)
 {
 	for (const auto &rt_ : to_ungroup)
 	{
-		auto ptd_ = m_terminal_strip->physicalTerminalData(rt_);
+		auto phy_t = m_terminal_strip->physicalTerminal(rt_.toWeakRef());
+		if (phy_t)
+		{
+				//Physical have only one real terminal, no need to ungroup it
+			if (phy_t.toStrongRef()->realTerminalCount() <= 1) {
+				continue;
+			}
 
-			//Physical have only one real terminal, no need to ungroup it
-		if (ptd_.realTerminalCount() <= 1) {
-			continue;
+			auto vector_ = m_physical_real_H.value(phy_t);
+			vector_.append(rt_);
+			m_physical_real_H.insert(phy_t, vector_);
 		}
-
-		auto vector_ = m_physical_real_H.value(ptd_);
-		vector_.append(rt_);
-		m_physical_real_H.insert(ptd_, vector_);
 	}
 }
diff --git a/sources/TerminalStrip/UndoCommand/groupterminalscommand.h b/sources/TerminalStrip/UndoCommand/groupterminalscommand.h
index 55b250319..6267d3db6 100644
--- a/sources/TerminalStrip/UndoCommand/groupterminalscommand.h
+++ b/sources/TerminalStrip/UndoCommand/groupterminalscommand.h
@@ -31,8 +31,8 @@ class GroupTerminalsCommand : public QUndoCommand
 {
 	public:
 		GroupTerminalsCommand(TerminalStrip *strip,
-							  const PhysicalTerminalData &receiver_,
-							  const QVector<QWeakPointer<RealTerminal>> &to_group,
+							  const QSharedPointer<PhysicalTerminal> &receiver_,
+							  const QVector<QSharedPointer<RealTerminal>> &to_group,
 							  QUndoCommand *parent = nullptr);
 
 		void undo() override;
@@ -40,8 +40,8 @@ class GroupTerminalsCommand : public QUndoCommand
 
 	private:
 		QPointer<TerminalStrip> m_terminal_strip;
-		PhysicalTerminalData m_receiver;
-		QVector<QWeakPointer<RealTerminal>> m_to_group;
+		QSharedPointer<PhysicalTerminal> m_receiver;
+		QVector<QSharedPointer<RealTerminal>> m_to_group;
 };
 
 /**
@@ -52,18 +52,18 @@ class UnGroupTerminalsCommand : public QUndoCommand
 {
 	public:
 		UnGroupTerminalsCommand(TerminalStrip *strip,
-								const QVector<QWeakPointer<RealTerminal>> &to_ungroup,
+								const QVector<QSharedPointer<RealTerminal>> &to_ungroup,
 								QUndoCommand *parent = nullptr);
 
 		void undo() override;
 		void redo() override;
 
 	private:
-		void setUp(const QVector<QWeakPointer<RealTerminal>> &to_ungroup);
+		void setUp(const QVector<QSharedPointer<RealTerminal>> &to_ungroup);
 
 	private:
 		QPointer<TerminalStrip> m_terminal_strip;
-		QHash <PhysicalTerminalData, QVector<QWeakPointer<RealTerminal>>> m_physical_real_H;
+		QHash <QSharedPointer<PhysicalTerminal>, QVector<QSharedPointer<RealTerminal>>> m_physical_real_H;
 };
 
 #endif // GROUPTERMINALSCOMMAND_H
diff --git a/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.cpp b/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.cpp
index fca830941..278005301 100644
--- a/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.cpp
+++ b/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.cpp
@@ -17,33 +17,35 @@
 */
 #include "sortterminalstripcommand.h"
 #include "../terminalstrip.h"
+#include "../../utils/qetutils.h"
 
 SortTerminalStripCommand::SortTerminalStripCommand(TerminalStrip *strip, QUndoCommand *parent) :
 	QUndoCommand(parent),
 	m_strip(strip)
 {
 	setText(QObject::tr("Trier le bornier %1").arg(m_strip->name()));
-	m_old_order = m_new_order = m_strip->physicalTerminalData();
+	m_old_order = QETUtils::weakVectorToShared(m_strip->physicalTerminal());
+	m_new_order = QETUtils::weakVectorToShared(m_strip->physicalTerminal());
 	sort();
 }
 
 void SortTerminalStripCommand::undo()
 {
 	if (m_strip) {
-		m_strip->setOrderTo(m_old_order);
+		m_strip->setOrderTo(QETUtils::sharedVectorToWeak(m_old_order));
 	}
 }
 
 void SortTerminalStripCommand::redo()
 {
 	if (m_strip) {
-		m_strip->setOrderTo(m_new_order);
+		m_strip->setOrderTo(QETUtils::sharedVectorToWeak(m_new_order));
 	}
 }
 
 void SortTerminalStripCommand::sort()
 {
-	std::sort(m_new_order.begin(), m_new_order.end(), [](PhysicalTerminalData arg1, PhysicalTerminalData arg2)
+	std::sort(m_new_order.begin(), m_new_order.end(), [](QSharedPointer<PhysicalTerminal> arg1, QSharedPointer<PhysicalTerminal> arg2)
 	{
 		const QRegularExpression rx(QStringLiteral("^\\d+"));
 
@@ -52,9 +54,9 @@ void SortTerminalStripCommand::sort()
 		int int1 =-1;
 		int int2 =-1;
 
-		if (arg1.realTerminalCount())
+		if (arg1->realTerminalCount())
 		{
-			str1 = arg1.realTerminals().constLast().toStrongRef()->label();
+			str1 = arg1->realTerminals().constLast().toStrongRef()->label();
 
 			auto match = rx.match(str1);
 			if (match.hasMatch()) {
@@ -62,9 +64,9 @@ void SortTerminalStripCommand::sort()
 			}
 		}
 
-		if (arg2.realTerminalCount())
+		if (arg2->realTerminalCount())
 		{
-			str2 = arg2.realTerminals().constLast().toStrongRef()->label();
+			str2 = arg2->realTerminals().constLast().toStrongRef()->label();
 
 			auto match = rx.match(str2);
 			if (match.hasMatch()) {
diff --git a/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.h b/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.h
index 6531563d2..5c2fd6d65 100644
--- a/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.h
+++ b/sources/TerminalStrip/UndoCommand/sortterminalstripcommand.h
@@ -23,7 +23,7 @@
 #include <QVector>
 
 class TerminalStrip;
-class PhysicalTerminalData;
+class PhysicalTerminal;
 
 /**
  * @brief The SortTerminalStripCommand class
@@ -43,8 +43,8 @@ class SortTerminalStripCommand : public QUndoCommand
 
 	private:
 		QPointer<TerminalStrip> m_strip;
-		QVector<PhysicalTerminalData> m_old_order,
-									  m_new_order;
+		QVector<QSharedPointer<PhysicalTerminal>> m_old_order,
+												  m_new_order;
 };
 
 #endif // SORTTERMINALSTRIPCOMMAND_H
diff --git a/sources/TerminalStrip/terminalstrip.cpp b/sources/TerminalStrip/terminalstrip.cpp
index fc748ea2d..0763ee4a2 100644
--- a/sources/TerminalStrip/terminalstrip.cpp
+++ b/sources/TerminalStrip/terminalstrip.cpp
@@ -22,6 +22,7 @@
 #include "../elementprovider.h"
 #include "../qetxml.h"
 #include "../autoNum/assignvariables.h"
+#include "../../utils/qetutils.h"
 
 using shared_real_terminal     = QSharedPointer<RealTerminal>;
 using shared_physical_terminal = QSharedPointer<PhysicalTerminal>;
@@ -61,7 +62,7 @@ QSharedPointer<RealTerminal> RealTerminal::sharedRef()
 
 /**
  * @brief RealTerminal::weakRef
- * @return a QWeakPointer of this
+ * @return a QWeakPointer of this, weak pointer can be bull
  */
 QWeakPointer<RealTerminal> RealTerminal::weakRef() {
 	return m_this_weak;
@@ -128,9 +129,9 @@ TerminalStrip *RealTerminal::parentStrip() const {
 int RealTerminal::level() const
 {
 	if (m_parent_terminal_strip) {
-		const auto phy_t = m_parent_terminal_strip->physicalTerminalData(m_this_weak);
-		if (!phy_t.isNull()) {
-			return phy_t.realTerminals().indexOf(m_this_weak);
+		const auto phy_t = m_parent_terminal_strip->physicalTerminal(m_this_weak);
+		if (phy_t) {
+			return phy_t.toStrongRef()->levelOf(m_this_weak);
 		}
 	}
 
@@ -334,133 +335,166 @@ QString RealTerminal::RealTerminal::xmlTagName() {
  *	@sa PhysicalTerminalData
  *
  */
-class PhysicalTerminal
+/**
+ * @brief PhysicalTerminal
+ * @param parent_strip : Parent terminal strip
+ * @param terminals : A vector of real terminals
+ * who compose this physical terminal.
+ * \p terminals must have at least one terminal
+ */
+PhysicalTerminal::PhysicalTerminal(TerminalStrip *parent_strip,
+								   QVector<QSharedPointer<RealTerminal>> terminals) :
+	m_parent_terminal_strip(parent_strip),
+	m_real_terminal(terminals)
+{}
+
+/**
+ * @brief PhysicalTerminal::sharedRef
+ * @return a QSharedPointer of this
+ */
+QSharedPointer<PhysicalTerminal> PhysicalTerminal::sharedRef()
 {
-	public:
-		/**
-		 * @brief PhysicalTerminal
-		 * @param parent_strip : Parent terminal strip
-		 * @param terminals : A vector of real terminals
-		 * who compose this physical terminal.
-		 * \p terminals must have at least one terminal
-		 */
-		PhysicalTerminal(TerminalStrip *parent_strip,
-						 QVector<shared_real_terminal> terminals) :
-			m_parent_terminal_strip(parent_strip),
-			m_real_terminal(terminals)
-		{}
+	QSharedPointer<PhysicalTerminal> this_shared(this->weakRef());
+	if (this_shared.isNull())
+	{
+		this_shared = QSharedPointer<PhysicalTerminal>(this);
+		m_this_weak = this_shared.toWeakRef();
+	}
 
-		/**
-		 * @brief setTerminals
-		 * Set the RealTerminal who compose this physical terminal.
-		 * The position of the RealTerminal in @a terminals
-		 * represent the level of these in this physical terminal.
-		 * @param terminals
-		 */
-		void setTerminals(QVector<shared_real_terminal> terminals) {
-			m_real_terminal = terminals;
-		}
+	return this_shared;
+}
 
-		/**
-		 * @brief addTerminals
-		 * Append the real terminal @a terminal
-		 * to this physical terminal.
-		 * @param terminal
-		 */
-		void addTerminal(shared_real_terminal terminal) {
-			m_real_terminal.append(terminal);
-		}
+/**
+ * @brief PhysicalTerminal::weakRef
+ * @return a QWeakPointer of this, weak pointer can be null
+ */
+QWeakPointer<PhysicalTerminal> PhysicalTerminal::weakRef() {
+	return m_this_weak;
+}
 
-		/**
-		 * @brief removeTerminal
-		 * Remove @a terminal from the list of real terminal
-		 * @param terminal
-		 * @return true if sucessfully removed
-		 */
-		bool removeTerminal(shared_real_terminal terminal) {
-			return m_real_terminal.removeOne(terminal);
-		}
+/**
+ * @brief toXml
+ * @param parent_document
+ * @return this physical terminal to xml
+ */
+QDomElement PhysicalTerminal::toXml(QDomDocument &parent_document) const
+{
+	auto root_elmt = parent_document.createElement(this->xmlTagName());
+	for (auto &real_t : m_real_terminal) {
+		root_elmt.appendChild(real_t->toXml(parent_document));
+	}
 
-		/**
-		 * @brief levelCount
-		 * @return the number of level of this terminal
-		 */
-		int levelCount() const {
-			return m_real_terminal.size();
-		}
+	return root_elmt;
+}
 
-		/**
-		 * @brief levelOf
-		 * @param terminal
-		 * @return the level of real terminal \p terminal or
-		 * -1 if \terminal is not a part of this physicalTerminal
-		 */
-		int levelOf(shared_real_terminal terminal) const {
-			return m_real_terminal.indexOf(terminal);
-		}
+/**
+ * @brief setTerminals
+ * Set the RealTerminal who compose this physical terminal.
+ * The position of the RealTerminal in @a terminals
+ * represent the level of these in this physical terminal.
+ * @param terminals
+ */
+void PhysicalTerminal::setTerminals(const QVector<QSharedPointer<RealTerminal>> &terminals) {
+	m_real_terminal = terminals;
+}
 
-		/**
-		 * @brief setLevelOf
-		 * Change the level of \p terminal
-		 * @param terminal
-		 * @param level
-		 */
-		bool setLevelOf(shared_real_terminal terminal, int level)
-		{
-			const int i = m_real_terminal.indexOf(terminal);
-			if (i >= 0)
-			{
+/**
+ * @brief addTerminals
+ * Append the real terminal @a terminal
+ * to this physical terminal.
+ * @param terminal
+ */
+void PhysicalTerminal::addTerminal(const QSharedPointer<RealTerminal> &terminal) {
+	m_real_terminal.append(terminal);
+}
+
+/**
+ * @brief removeTerminal
+ * Remove @a terminal from the list of real terminal
+ * @param terminal
+ * @return true if sucessfully removed
+ */
+bool PhysicalTerminal::removeTerminal(const QSharedPointer<RealTerminal> &terminal) {
+	return m_real_terminal.removeOne(terminal);
+}
+
+/**
+ * @brief levelCount
+ * @return the number of level of this terminal
+ */
+int PhysicalTerminal::levelCount() const {
+	return m_real_terminal.size();
+}
+
+/**
+ * @brief levelOf
+ * @param terminal
+ * @return the level of real terminal \p terminal or
+ * -1 if \terminal is not a part of this physicalTerminal
+ */
+int PhysicalTerminal::levelOf(const QWeakPointer<RealTerminal> &terminal) const {
+	return m_real_terminal.indexOf(terminal.toStrongRef());
+}
+
+/**
+ * @brief setLevelOf
+ * Change the level of \p terminal
+ * @param terminal
+ * @param level
+ */
+bool PhysicalTerminal::setLevelOf(const QSharedPointer<RealTerminal> &terminal, int level)
+{
+	const int i = m_real_terminal.indexOf(terminal);
+	if (i >= 0)
+	{
 #if QT_VERSION >= QT_VERSION_CHECK(5,14,0)
-				m_real_terminal.swapItemsAt(i, std::min(level, m_real_terminal.size()-1));
+		m_real_terminal.swapItemsAt(i, std::min(level, m_real_terminal.size()-1));
 #else
-				auto j = std::min(level, m_real_terminal.size()-1);
-				std::swap(m_real_terminal.begin()[i], m_real_terminal.begin()[j]);
+		auto j = std::min(level, m_real_terminal.size()-1);
+		std::swap(m_real_terminal.begin()[i], m_real_terminal.begin()[j]);
 #endif
-				return true;
-			}
-			return false;
-		}
+		return true;
+	}
+	return false;
+}
 
-		/**
-		 * @brief terminals
-		 * @return A vector of RealTerminal who compose this PhysicalTerminal
-		 */
-		QVector<shared_real_terminal> terminals() const {
-			return m_real_terminal;
-		}
+/**
+ * @brief terminals
+ * @return A vector of RealTerminal who compose this PhysicalTerminal
+ */
+QVector<QWeakPointer<RealTerminal>> PhysicalTerminal::realTerminals() const
+{
+	QVector<QWeakPointer<RealTerminal>> vector_;
+	for (const auto &real_t : m_real_terminal) {
+		vector_.append(real_t.toWeakRef());
+	}
+	return vector_;
+}
 
-		/**
-		 * @brief uuid
-		 * @return the uuid of this physical terminal
-		 */
-		QUuid uuid() const {
-			return m_uuid;
-		}
+/**
+ * @brief uuid
+ * @return the uuid of this physical terminal
+ */
+QUuid PhysicalTerminal::uuid() const {
+	return m_uuid;
+}
 
-		static QString xmlTagName() {
-			return QStringLiteral("physical_terminal");
-		}
+int PhysicalTerminal::pos() const
+{
+	if (m_parent_terminal_strip) {
+		return m_parent_terminal_strip->pos(m_this_weak);
+	} else {
+		return -1;
+	}
+}
 
-		/**
-		 * @brief toXml
-		 * @param parent_document
-		 * @return this physical terminal to xml
-		 */
-		QDomElement toXml(QDomDocument &parent_document) const
-		{
-			auto root_elmt = parent_document.createElement(this->xmlTagName());
-			for (auto &real_t : m_real_terminal) {
-				root_elmt.appendChild(real_t->toXml(parent_document));
-			}
+int PhysicalTerminal::realTerminalCount() const {
+	return m_real_terminal.size();
+}
 
-			return root_elmt;
-		}
-
-	private:
-		QPointer<TerminalStrip> m_parent_terminal_strip;
-		QVector<shared_real_terminal> m_real_terminal;
-		const QUuid m_uuid = QUuid::createUuid();
-};
+QString PhysicalTerminal::xmlTagName() {
+	return QStringLiteral("physical_terminal");
+}
 
 
 /************************************************************************************/
@@ -554,16 +588,13 @@ bool TerminalStrip::addTerminal(Element *terminal)
 	m_terminal_elements_vector.append(terminal);
 
 		//Create the real terminal
-	auto raw_ptr = new RealTerminal(this, terminal);
-	auto real_terminal = raw_ptr->sharedRef();
+	auto raw_real_ptr = new RealTerminal(this, terminal);
+	auto real_terminal = raw_real_ptr->sharedRef();
 	m_real_terminals.append(real_terminal);
 
 		//Create a new single level physical terminal
-	const shared_physical_terminal physical_terminal(
-				new PhysicalTerminal(this,
-									 QVector<shared_real_terminal>{real_terminal}));
-
-	m_physical_terminals.append(physical_terminal);
+	auto raw_phy_ptr = new PhysicalTerminal(this, QVector<QSharedPointer<RealTerminal>>{real_terminal});
+	m_physical_terminals.append(raw_phy_ptr->sharedRef());
 
 	static_cast<TerminalElement *>(terminal)->setParentTerminalStrip(this);
 
@@ -581,7 +612,6 @@ bool TerminalStrip::removeTerminal(Element *terminal)
 	if (m_terminal_elements_vector.contains(terminal))
 	{
 		m_terminal_elements_vector.removeOne(terminal);
-
 			//Get the real and physical terminal associated to @terminal
 		if (auto real_terminal = realTerminal(terminal))
 		{
@@ -590,9 +620,9 @@ bool TerminalStrip::removeTerminal(Element *terminal)
 				if (physical_terminal->levelCount() == 1)  {
 					m_physical_terminals.removeOne(physical_terminal);
 				} else {
-					auto v = physical_terminal->terminals();
+					auto v = physical_terminal->realTerminals();
 					v.removeOne(real_terminal);
-					physical_terminal->setTerminals(v);
+					physical_terminal->setTerminals(QETUtils::weakVectorToShared(v));
 				}
 			}
 			m_real_terminals.removeOne(real_terminal);
@@ -632,50 +662,45 @@ int TerminalStrip::physicalTerminalCount() const {
  * @brief TerminalStrip::physicalTerminalData
  * @param index
  * @return The data of the physical terminal at index \p index
+ * returned QWeakPointer can be null
  */
-PhysicalTerminalData TerminalStrip::physicalTerminalData(int index) const
+QWeakPointer<PhysicalTerminal> TerminalStrip::physicalTerminal(int index) const
 {
 	if (index < m_physical_terminals.size()) {
-		return PhysicalTerminalData(this, m_physical_terminals.at(index));
+		return m_physical_terminals.at(index).toWeakRef();
 	} else {
-		return PhysicalTerminalData();
+		return QWeakPointer<PhysicalTerminal>();
 	}
 }
 
 /**
  * @brief TerminalStrip::physicalTerminalData
  * @param real_terminal
- * @return the parent PhysicalTerminalData of \p real_terminal.
- * the PhysicalTerminalData can be invalid if \p real_terminal don't belong to this strip
+ * @return the parent PhysicalTerminal of \p real_terminal.
+ * the PhysicalTerminal can be null if \p real_terminal don't belong to this strip
  */
-PhysicalTerminalData TerminalStrip::physicalTerminalData (const QWeakPointer<RealTerminal> &real_terminal) const
+QWeakPointer<PhysicalTerminal> TerminalStrip::physicalTerminal (const QWeakPointer<RealTerminal> &real_terminal) const
 {
 	const auto real_t = real_terminal.toStrongRef();
 	if (real_t.isNull()) {
-		return PhysicalTerminalData();
+		return QWeakPointer<PhysicalTerminal>();
 	}
 
 	const auto phy_t = physicalTerminal(real_t);
 	if (phy_t) {
-		return PhysicalTerminalData(this, phy_t);
+		return phy_t.toWeakRef();
+	} else {
+		return QWeakPointer<PhysicalTerminal>();
 	}
-
-	return PhysicalTerminalData();
 }
 
 /**
- * @brief TerminalStrip::physicalTerminalData
- * @return A vector of all physical terminal data owned by this terminal strip.
+ * @brief TerminalStrip::physicalTerminal
+ * @return A vector of all physical terminal owned by this terminal strip.
  * The order of the vector is the same as the order of the terminal in the strip
  */
-QVector<PhysicalTerminalData> TerminalStrip::physicalTerminalData() const
-{
-	QVector<PhysicalTerminalData> v_;
-	for (auto i = 0 ; i<physicalTerminalCount() ; ++i) {
-		v_.append(physicalTerminalData(i));
-	}
-
-	return v_;
+QVector<QWeakPointer<PhysicalTerminal>> TerminalStrip::physicalTerminal() const {
+	return QETUtils::sharedVectorToWeak(m_physical_terminals);
 }
 
 /**
@@ -685,23 +710,23 @@ QVector<PhysicalTerminalData> TerminalStrip::physicalTerminalData() const
  * \p sorted_vector must contain exaclty the same physical terminal as this strip
  * else this function do nothing.
  *
- * To avoid any mistake, you should call TerminalStrip::physicalTerminalData()
+ * To avoid any mistake, you should call TerminalStrip::physicalTerminal()
  * sort the returned vector and call this function with sorted vector, then you are sure
  * the vector contain the same values, no more no less.
  *
  * @param sorted_vector
  * @return true is successfully sorted.
  */
-bool TerminalStrip::setOrderTo(const QVector<PhysicalTerminalData> &sorted_vector)
+bool TerminalStrip::setOrderTo(const QVector<QWeakPointer<PhysicalTerminal>> &sorted_vector)
 {
 	if (sorted_vector.size() != m_physical_terminals.size()) {
 		return false;
 	}
 
 	QVector<QSharedPointer<PhysicalTerminal>> new_order;
-	for (const auto &ptd : sorted_vector)
+	for (const auto &t_ : sorted_vector)
 	{
-		const auto physical_t = ptd.physicalTerminal().toStrongRef();
+		const auto physical_t = t_.toStrongRef();
 		if (physical_t.isNull()) {
 			continue;
 		}
@@ -730,9 +755,9 @@ bool TerminalStrip::setOrderTo(const QVector<PhysicalTerminalData> &sorted_vecto
  * @param receiver_terminal
  * @return true if success
  */
-bool TerminalStrip::groupTerminals(const PhysicalTerminalData &receiver_terminal, const QVector<QWeakPointer<RealTerminal>> &added_terminals)
+bool TerminalStrip::groupTerminals(const QWeakPointer<PhysicalTerminal> &receiver_terminal, const QVector<QWeakPointer<RealTerminal>> &added_terminals)
 {
-	const auto receiver_ = receiver_terminal.physicalTerminal().toStrongRef();
+	const auto receiver_ = receiver_terminal.toStrongRef();
 	if (receiver_.isNull()) {
 		qDebug() << "TerminalStrip::groupTerminal : Arguments terminals don't belong to this strip. Operation aborted.";
 		return false;
@@ -758,7 +783,7 @@ bool TerminalStrip::groupTerminals(const PhysicalTerminalData &receiver_terminal
 	{
 		const auto vector_ = m_physical_terminals;
 		for (const auto &phys : vector_) {
-			if (phys->terminals().isEmpty()) {
+			if (phys->realTerminals().isEmpty()) {
 				m_physical_terminals.removeOne(phys);
 			}
 		}
@@ -782,13 +807,11 @@ void TerminalStrip::unGroupTerminals(const QVector<QWeakPointer<RealTerminal>> &
 		{
 			if (auto physical_terminal = physicalTerminal(real_terminal)) //Get the physical terminal
 			{
-				if (physical_terminal->terminals().size() > 1) //Check if physical have more than one real terminal
+				if (physical_terminal->realTerminals().size() > 1) //Check if physical have more than one real terminal
 				{
 					physical_terminal->removeTerminal(real_terminal);
-					const shared_physical_terminal new_physical_terminal (
-								new PhysicalTerminal(this, QVector<shared_real_terminal>{real_terminal}));
-
-					m_physical_terminals.append(new_physical_terminal);
+					auto raw_ptr = new PhysicalTerminal(this, QVector<QSharedPointer<RealTerminal>>{real_terminal});
+					m_physical_terminals.append(raw_ptr->sharedRef());
 					ungrouped = true;
 				}
 			}
@@ -814,7 +837,7 @@ bool TerminalStrip::setLevel(const QWeakPointer<RealTerminal> &real_terminal, in
 		auto physical_terminal = physicalTerminal(real_t);
 		if (physical_terminal)
 		{
-			if (physical_terminal->terminals().size() > 1 &&
+			if (physical_terminal->realTerminals().size() > 1 &&
 				physical_terminal->setLevelOf(real_t, level))
 			{
 				emit orderChanged();
@@ -1084,7 +1107,7 @@ QWeakPointer<RealTerminal> TerminalStrip::previousTerminalInLevel(const QWeakPoi
 		const auto index = m_physical_terminals.indexOf(phy_t);
 		if (index >= 1)
 		{
-			const auto t_vector = m_physical_terminals.at(index-1)->terminals();
+			const auto t_vector = m_physical_terminals.at(index-1)->realTerminals();
 			if (t_vector.size() > level_) {
 				return t_vector.at(level_);
 			}
@@ -1110,7 +1133,7 @@ QWeakPointer<RealTerminal> TerminalStrip::nextTerminalInLevel(const QWeakPointer
 		const auto index = m_physical_terminals.indexOf(phy_t);
 		if (index < m_physical_terminals.size()-1)
 		{
-			const auto t_vector = m_physical_terminals.at(index+1)->terminals();
+			const auto t_vector = m_physical_terminals.at(index+1)->realTerminals();
 			if (t_vector.size() > level_) {
 				return t_vector.at(level_);
 			}
@@ -1213,8 +1236,8 @@ bool TerminalStrip::fromXml(QDomElement &xml_element)
 				real_t_vector.append(real_t);
 			}
 
-			const shared_physical_terminal phy_t(new PhysicalTerminal(this, real_t_vector));
-			m_physical_terminals.append(phy_t);
+			auto raw_ptr = new PhysicalTerminal(this, real_t_vector);
+			m_physical_terminals.append(raw_ptr->sharedRef());
 			m_real_terminals.append(real_t_vector);
 		}
 
@@ -1255,7 +1278,7 @@ QSharedPointer<PhysicalTerminal> TerminalStrip::physicalTerminal(QSharedPointer<
 	}
 
 	for (auto &physical : qAsConst(m_physical_terminals)) {
-		if (physical->terminals().contains(terminal)) {
+		if (physical->realTerminals().contains(terminal)) {
 			pt = physical;
 			break;
 		}
@@ -1321,74 +1344,6 @@ void TerminalStrip::rebuildRealVector()
 {
 	m_real_terminals.clear();
 	for (const auto &phy : qAsConst(m_physical_terminals)) {
-		m_real_terminals.append(phy->terminals());
+		m_real_terminals.append(QETUtils::weakVectorToShared(phy->realTerminals()));
 	}
 }
-
-/************************************************************************************/
-/************************************************************************************/
-/************************************************************************************/
-/************************************************************************************/
-/************************************************************************************/
-
-
-PhysicalTerminalData::PhysicalTerminalData(const TerminalStrip *strip, QSharedPointer<PhysicalTerminal> terminal) :
-	m_strip(strip),
-	m_physical_terminal(terminal.toWeakRef())
-{}
-
-bool PhysicalTerminalData::isNull() const
-{
-	return m_physical_terminal.isNull();
-}
-
-int PhysicalTerminalData::pos() const
-{
-	if (m_strip) {
-		return m_strip->pos(m_physical_terminal);
-	} else {
-		return -1;
-	}
-}
-
-QUuid PhysicalTerminalData::uuid() const
-{
-	const auto pt_ = m_physical_terminal.toStrongRef();
-	if (pt_) {
-		return pt_->uuid();
-	} else {
-		return QUuid();
-	}
-}
-
-int PhysicalTerminalData::realTerminalCount() const
-{
-	const auto pt_ = m_physical_terminal.toStrongRef();
-	if (pt_) {
-		return pt_->terminals().size();
-	} else {
-		return 0;
-	}
-
-}
-
-QVector<QWeakPointer<RealTerminal>> PhysicalTerminalData::realTerminals() const
-{
-	const auto phy_t = m_physical_terminal.toStrongRef();
-	if (phy_t)
-	{
-		QVector<QWeakPointer<RealTerminal>> vector_;
-		for (const auto &real_t : phy_t->terminals()) {
-			vector_.append(real_t.toWeakRef());
-		}
-		return vector_;
-	}
-	else
-	{
-		return QVector<QWeakPointer<RealTerminal>>();
-	}
-}
-
-QWeakPointer<PhysicalTerminal> PhysicalTerminalData::physicalTerminal() const {
-	return m_physical_terminal;
-}
diff --git a/sources/TerminalStrip/terminalstrip.h b/sources/TerminalStrip/terminalstrip.h
index e47561457..96f4cdbb2 100644
--- a/sources/TerminalStrip/terminalstrip.h
+++ b/sources/TerminalStrip/terminalstrip.h
@@ -95,42 +95,42 @@ class RealTerminal
 		QWeakPointer<RealTerminal> m_this_weak;
 };
 
-/**
- * @brief The PhysicalTerminalData
- * Conveniant struct to quickly get some values
- * of a PhysicalTerminal
- */
-class PhysicalTerminalData
+class PhysicalTerminal
 {
 		friend class TerminalStrip;
 
 	private:
-		PhysicalTerminalData(const TerminalStrip *strip, QSharedPointer<PhysicalTerminal> terminal);
+		PhysicalTerminal(TerminalStrip *parent_strip, QVector<QSharedPointer<RealTerminal>> terminals);
+		QSharedPointer<PhysicalTerminal> sharedRef();
+		QWeakPointer<PhysicalTerminal> weakRef();
+
+		QDomElement toXml(QDomDocument &parent_document) const;
+
+		void setTerminals(const QVector<QSharedPointer<RealTerminal>> &terminals);
+		void addTerminal(const QSharedPointer<RealTerminal> &terminal);
+		bool removeTerminal(const QSharedPointer<RealTerminal> &terminal);
+
+		bool setLevelOf(const QSharedPointer<RealTerminal> &terminal, int level);
 
 	public:
-		PhysicalTerminalData(){}
+		PhysicalTerminal(){}
 
-		bool isNull() const;
-		int pos() const;
-		QUuid uuid() const;
-		int realTerminalCount() const;
+		int levelCount() const;
+		int levelOf(const QWeakPointer<RealTerminal> &terminal) const;
 		QVector<QWeakPointer<RealTerminal>> realTerminals() const;
-		QWeakPointer<PhysicalTerminal> physicalTerminal() const;
+		QUuid uuid() const;
+		int pos() const;
+		int realTerminalCount() const;
+
+		static QString xmlTagName();
 
 	private:
-		QPointer<const TerminalStrip> m_strip;
-		QWeakPointer<PhysicalTerminal> m_physical_terminal;
+		QPointer<TerminalStrip> m_parent_terminal_strip;
+		QVector<QSharedPointer<RealTerminal>> m_real_terminal;
+		QUuid m_uuid = QUuid::createUuid();
+		QWeakPointer<PhysicalTerminal> m_this_weak;
 };
 
-//Code to use PhysicalTerminalData as key for QHash
-inline bool operator == (const PhysicalTerminalData &phy_1, const PhysicalTerminalData &phy_2) {
-	return phy_1.uuid() == phy_2.uuid();
-}
-
-inline uint qHash(const PhysicalTerminalData &key, uint seed) {
-	return qHash(key.uuid(), seed);
-}
-
 /**
  * @brief The TerminalStrip class
  * This class hold all the datas and configurations
@@ -180,12 +180,12 @@ class TerminalStrip : public QObject
 
 		int pos(const QWeakPointer<PhysicalTerminal> &terminal) const;
 		int physicalTerminalCount() const;
-		PhysicalTerminalData physicalTerminalData(int index) const;
-		PhysicalTerminalData physicalTerminalData (const QWeakPointer<RealTerminal> &real_terminal) const;
-		QVector<PhysicalTerminalData> physicalTerminalData() const;
+		QWeakPointer<PhysicalTerminal> physicalTerminal(int index) const;
+		QWeakPointer<PhysicalTerminal> physicalTerminal (const QWeakPointer<RealTerminal> &real_terminal) const;
+		QVector<QWeakPointer<PhysicalTerminal>> physicalTerminal() const;
 
-		bool setOrderTo(const QVector<PhysicalTerminalData> &sorted_vector);
-		bool groupTerminals(const PhysicalTerminalData &receiver_terminal, const QVector<QWeakPointer<RealTerminal>> &added_terminals);
+		bool setOrderTo(const QVector<QWeakPointer<PhysicalTerminal>> &sorted_vector);
+		bool groupTerminals(const QWeakPointer<PhysicalTerminal> &receiver_terminal, const QVector<QWeakPointer<RealTerminal>> &added_terminals);
 		void unGroupTerminals(const QVector<QWeakPointer<RealTerminal>> &terminals_to_ungroup);
 		bool setLevel(const QWeakPointer<RealTerminal> &real_terminal, int level);
 
diff --git a/sources/TerminalStrip/ui/terminalstripeditor.cpp b/sources/TerminalStrip/ui/terminalstripeditor.cpp
index 87c55cde8..4ca0e4ee7 100644
--- a/sources/TerminalStrip/ui/terminalstripeditor.cpp
+++ b/sources/TerminalStrip/ui/terminalstripeditor.cpp
@@ -34,6 +34,7 @@
 #include "../UndoCommand/groupterminalscommand.h"
 #include "../UndoCommand/changeterminallevel.h"
 #include "../UndoCommand/bridgeterminalscommand.h"
+#include "../../utils/qetutils.h"
 
 #include <QTreeWidgetItem>
 
@@ -231,10 +232,10 @@ QTreeWidgetItem* TerminalStripEditor::addTerminalStrip(TerminalStrip *terminal_s
 		//Add child terminal of the strip
 	for (auto i=0 ; i<terminal_strip->physicalTerminalCount() ; ++i)
 	{
-		auto ptd = terminal_strip->physicalTerminalData(i);
-		if (ptd.realTerminalCount())
+		auto phy_t = terminal_strip->physicalTerminal(i).toStrongRef();
+		if (phy_t->realTerminalCount())
 		{
-			const auto real_t = ptd.realTerminals().at(0).toStrongRef();
+			const auto real_t = phy_t->realTerminals().at(0).toStrongRef();
 			auto terminal_item = new QTreeWidgetItem(strip_item, QStringList(real_t->label()), TerminalStripTreeWidget::Terminal);
 			terminal_item->setData(0, TerminalStripTreeWidget::UUID_USER_ROLE, real_t->elementUuid());
 			terminal_item->setIcon(0, QET::Icons::ElementTerminal);
@@ -352,7 +353,7 @@ void TerminalStripEditor::spanMultiLevelTerminals()
 	auto current_row = 0;
 	for (auto i = 0 ; i < m_current_strip->physicalTerminalCount() ; ++i)
 	{
-		const auto level_count = m_current_strip->physicalTerminalData(i).realTerminalCount();
+		const auto level_count = m_current_strip->physicalTerminal(i).toStrongRef()->realTerminalCount();
 		if (level_count > 1) {
 			ui->m_table_widget->setSpan(current_row, 0, level_count, 1);
 		}
@@ -677,13 +678,15 @@ void TerminalStripEditor::on_m_group_terminals_pb_clicked()
 		auto mrtd_vector = m_model->modelRealTerminalDataForIndex(ui->m_table_widget->selectionModel()->selectedIndexes());
 		if (mrtd_vector.size() >= 2)
 		{
-			auto receiver_ = m_current_strip->physicalTerminalData(mrtd_vector.takeFirst().real_terminal);
+			auto receiver_ = m_current_strip->physicalTerminal(mrtd_vector.takeFirst().real_terminal);
 
 			QVector<QWeakPointer<RealTerminal>> vector_;
 			for (const auto & mrtd : mrtd_vector) {
 				vector_.append(mrtd.real_terminal);
 			}
-			m_project->undoStack()->push(new GroupTerminalsCommand(m_current_strip, receiver_, vector_));
+			m_project->undoStack()->push(new GroupTerminalsCommand(m_current_strip,
+																   receiver_,
+																   QETUtils::weakVectorToShared(vector_)));
 		}
 	}
 }
@@ -701,7 +704,8 @@ void TerminalStripEditor::on_m_ungroup_pb_clicked()
 		for (const auto &mrtd : mrtd_vector) {
 			vector_.append(mrtd.real_terminal);
 		}
-		m_project->undoStack()->push(new UnGroupTerminalsCommand(m_current_strip, vector_));
+		m_project->undoStack()->push(new UnGroupTerminalsCommand(m_current_strip,
+																 QETUtils::weakVectorToShared(vector_)));
 	}
 }
 
diff --git a/sources/TerminalStrip/ui/terminalstripmodel.cpp b/sources/TerminalStrip/ui/terminalstripmodel.cpp
index 4ec7837d4..9c7be8841 100644
--- a/sources/TerminalStrip/ui/terminalstripmodel.cpp
+++ b/sources/TerminalStrip/ui/terminalstripmodel.cpp
@@ -481,13 +481,14 @@ void TerminalStripModel::fillPhysicalTerminalData()
 		//Get all physical terminal
 	if (m_terminal_strip)
 	{
-		for (const auto &ptd : m_terminal_strip->physicalTerminalData())
+		for (const auto &t_ : m_terminal_strip->physicalTerminal())
 		{
+			const auto phy_t = t_.toStrongRef();
 			modelPhysicalTerminalData mptd;
-			mptd.pos_ = ptd.pos();
-			mptd.uuid_ = ptd.uuid();
+			mptd.pos_ = phy_t->pos();
+			mptd.uuid_ = phy_t->uuid();
 
-			for (const auto &real_t : ptd.realTerminals())
+			for (const auto &real_t : phy_t->realTerminals())
 			{
 				if (!real_t.isNull())
 				{
@@ -673,9 +674,9 @@ QPixmap TerminalStripModel::bridgePixmapFor(const QModelIndex &index) const
 		//Check if we need to draw a none bridge pixmap
 
 		//Check previous
-	auto physical_data = m_terminal_strip->physicalTerminalData(mrtd.real_terminal);
+	auto phy_t = m_terminal_strip->physicalTerminal(mrtd.real_terminal).toStrongRef();
 	auto current_real_terminal = mrtd;
-	auto current_phy_uuid = physical_data.uuid();
+	auto current_phy_uuid = phy_t->uuid();
 	bool already_jumped_to_previous = false;
 	modelRealTerminalData previous_data;
 
@@ -687,7 +688,7 @@ QPixmap TerminalStripModel::bridgePixmapFor(const QModelIndex &index) const
 		}
 
 			//We are in the same physical terminal as previous loop
-		if (current_phy_uuid == m_terminal_strip->physicalTerminalData(current_real_terminal.real_terminal).uuid())
+		if (current_phy_uuid == m_terminal_strip->physicalTerminal(current_real_terminal.real_terminal).toStrongRef()->uuid())
 		{
 			if (current_real_terminal.bridged_ &&
 				current_real_terminal.level_ == level_column) {
@@ -699,7 +700,7 @@ QPixmap TerminalStripModel::bridgePixmapFor(const QModelIndex &index) const
 			break;
 		} else {
 			already_jumped_to_previous = true;
-			current_phy_uuid = m_terminal_strip->physicalTerminalData(current_real_terminal.real_terminal).uuid();
+			current_phy_uuid = m_terminal_strip->physicalTerminal(current_real_terminal.real_terminal).toStrongRef()->uuid();
 			if (current_real_terminal.bridged_ &&
 				current_real_terminal.level_ == level_column) {
 				previous_data = current_real_terminal;
@@ -710,7 +711,7 @@ QPixmap TerminalStripModel::bridgePixmapFor(const QModelIndex &index) const
 
 		//Check next
 	current_real_terminal = mrtd;
-	current_phy_uuid = physical_data.uuid();
+	current_phy_uuid = phy_t->uuid();
 	bool already_jumped_to_next = false;
 	modelRealTerminalData next_data;
 
@@ -722,7 +723,7 @@ QPixmap TerminalStripModel::bridgePixmapFor(const QModelIndex &index) const
 		}
 
 			//We are in the same physical terminal as previous loop
-		if (current_phy_uuid == m_terminal_strip->physicalTerminalData(current_real_terminal.real_terminal).uuid())
+		if (current_phy_uuid == m_terminal_strip->physicalTerminal(current_real_terminal.real_terminal).toStrongRef()->uuid())
 		{
 			if (current_real_terminal.bridged_ &&
 				current_real_terminal.level_ == level_column) {
@@ -734,7 +735,7 @@ QPixmap TerminalStripModel::bridgePixmapFor(const QModelIndex &index) const
 			break;
 		} else {
 			already_jumped_to_next = true;
-			current_phy_uuid = m_terminal_strip->physicalTerminalData(current_real_terminal.real_terminal).uuid();
+			current_phy_uuid = m_terminal_strip->physicalTerminal(current_real_terminal.real_terminal).toStrongRef()->uuid();
 			if (current_real_terminal.bridged_ &&
 				current_real_terminal.level_ == level_column) {
 				next_data = current_real_terminal;
diff --git a/sources/utils/qetutils.h b/sources/utils/qetutils.h
index a997b4504..4dfb6f7c2 100644
--- a/sources/utils/qetutils.h
+++ b/sources/utils/qetutils.h
@@ -1,4 +1,4 @@
-/*
+/*
 	Copyright 2006-2021 The QElectroTech Team
 	This file is part of QElectroTech.
 
@@ -19,7 +19,9 @@
 #define QETUTILS_H
 
 #include <QMargins>
+#include <QWeakPointer>
 
+class RealTerminal;
 /**
 	Provide some small utils function
 */
@@ -27,6 +29,27 @@ namespace QETUtils
 {
 	QString marginsToString(const QMargins &margins);
 	QMargins marginsFromString(const QString &string);
+
+	template <typename T>
+	QVector<QWeakPointer<T>> sharedVectorToWeak(const QVector<QSharedPointer<T>> &vector)
+	{
+		QVector<QWeakPointer<T>> return_vector;
+		for (const auto shared : vector) {
+			return_vector.append(shared.toWeakRef());
+		}
+		return return_vector;
+	}
+
+
+	template <typename T>
+	QVector<QSharedPointer<T>> weakVectorToShared(const QVector<QWeakPointer<T>> &vector)
+	{
+		QVector<QSharedPointer<T>> return_vector;
+		for (const auto weak : vector) {
+			return_vector.append(weak.toStrongRef());
+		}
+		return return_vector;
+	}
 }
 
 #endif // QETUTILS_H