diff --git a/sources/diagram.cpp b/sources/diagram.cpp
index 7eedb0246..6cccf6e56 100644
--- a/sources/diagram.cpp
+++ b/sources/diagram.cpp
@@ -863,53 +863,6 @@ bool Diagram::initFromXml(QDomElement &document, QPointF position, bool consider
 	return(from_xml);
 }
 
-/*!
- * \brief findTerminal
- * Find terminal to which the conductor should be connected
- * \param conductor_index 1 or 2 depending on which terminal is searched
- * \param f Conductor xml element
- * \param table_adr_id Hash table to all terminal id assignement (legacy)
- * \param added_elements Elements found in the xml file
- * \return
- */
-Terminal* findTerminal(int conductor_index, QDomElement& f, QHash<int, Terminal *>& table_adr_id, QList<Element *>& added_elements) {
-    assert(conductor_index == 1 || conductor_index == 2);
-
-    QString element_index = "element" + QString::number(conductor_index);
-    QString terminal_index = "terminal" + QString::number(conductor_index);
-
-    if (f.hasAttribute(element_index)) {
-        QUuid element_uuid = QUuid(f.attribute(element_index));
-        // element1 did not exist in the conductor part of the xml until prior 0.7
-        // It is used as an indicator that uuid's are used to identify terminals
-        bool element_found = false;
-        for (auto element: added_elements) {
-            if (element->uuid() != element_uuid)
-                continue;
-            element_found = true;
-            QUuid terminal_uuid = QUuid(f.attribute(terminal_index));
-            for (auto terminal: element->terminals()) {
-                if (terminal->uuid() != terminal_uuid)
-                    continue;
-
-                return terminal;
-            }
-            qDebug() << "Diagram::fromXml() : "<< terminal_index << ":" << terminal_uuid << "not found in " << element_index << ":"  << element_uuid;
-            break;
-        }
-        if (!element_found)
-            qDebug() << "Diagram::fromXml() : " <<  element_index << ": " << element_uuid << "not found";
-    } else {
-        // Backward compatibility. Until version 0.7 a generated id is used to link the terminal.
-        int id_p1 = f.attribute(terminal_index).toInt();
-        if (!table_adr_id.contains(id_p1)) {
-            qDebug() << "Diagram::fromXml() : terminal id " << id_p1 << " not found";
-        } else
-            return table_adr_id.value(id_p1);
-    }
-    return nullptr;
-}
-
 /**
 	Importe le schema decrit dans un element XML. Si une position est
 	precisee, les elements importes sont positionnes de maniere a ce que le
@@ -1078,22 +1031,26 @@ bool Diagram::fromXml(QDomElement &document, QPointF position, bool consider_inf
 		if (!Conductor::valideXml(f)) continue;
 
 			//Check if terminal that conductor must be linked is know
-
-        Terminal* p1 = findTerminal(1, f, table_adr_id, added_elements);
-        Terminal* p2 = findTerminal(2, f, table_adr_id, added_elements);
-
-        if (p1 && p2 && p1 != p2)
-        {
-            Conductor *c = new Conductor(p1, p2);
-            if (c->isValid())
-            {
-                addItem(c);
-                c -> fromXml(f);
-                added_conductors << c;
-            }
-            else
-                delete c;
-        }
+		int id_p1 = f.attribute("terminal1").toInt();
+		int id_p2 = f.attribute("terminal2").toInt();
+		if (table_adr_id.contains(id_p1) && table_adr_id.contains(id_p2))
+		{
+			Terminal *p1 = table_adr_id.value(id_p1);
+			Terminal *p2 = table_adr_id.value(id_p2);
+			if (p1 != p2)
+			{
+				Conductor *c = new Conductor(p1, p2);
+				if (c->isValid())
+				{
+					addItem(c);
+					c -> fromXml(f);
+					added_conductors << c;
+				}
+				else
+					delete c;
+			}
+		}
+		else qDebug() << "Diagram::fromXml() : Le chargement du conducteur" << id_p1 << id_p2 << "a echoue";
 	}
 
 		//Load tables
diff --git a/sources/editor/graphicspart/partterminal.cpp b/sources/editor/graphicspart/partterminal.cpp
index 88cb59ba3..a1b557d79 100644
--- a/sources/editor/graphicspart/partterminal.cpp
+++ b/sources/editor/graphicspart/partterminal.cpp
@@ -25,11 +25,9 @@
 	@param scene La scene sur laquelle figure cette borne
 */
 PartTerminal::PartTerminal(QETElementEditor *editor, QGraphicsItem *parent) :
-    CustomElementGraphicPart(editor, parent)
+	CustomElementGraphicPart(editor, parent),
+	m_orientation(Qet::North)
 {
-    d = new TerminalData(this);
-    d->m_orientation = Qet::North;
-    d->m_uuid = QUuid::createUuid(); // if part is loaded this uuid will be overwritten, but being sure that terminal has a uuid
 	updateSecondPoint();
 	setZValue(100000);
 }
@@ -43,8 +41,15 @@ PartTerminal::~PartTerminal() {
 	@param xml_elmt Element XML a lire
 */
 void PartTerminal::fromXml(const QDomElement &xml_elmt) {
-    d->fromXml(xml_elmt);
-    setPos(d->m_pos);
+	// lit la position de la borne
+	qreal term_x = 0.0, term_y = 0.0;
+	QET::attributeIsAReal(xml_elmt, "x", &term_x);
+	QET::attributeIsAReal(xml_elmt, "y", &term_y);
+	setPos(QPointF(term_x, term_y));
+	
+	// lit l'orientation de la borne
+	m_orientation = Qet::orientationFromString(xml_elmt.attribute("orientation"));
+	
 	updateSecondPoint();
 }
 
@@ -54,7 +59,18 @@ void PartTerminal::fromXml(const QDomElement &xml_elmt) {
 	@return un element XML decrivant la borne
 */
 const QDomElement PartTerminal::toXml(QDomDocument &xml_document) const {
-    return d->toXml(xml_document);
+	QDomElement xml_element = xml_document.createElement("terminal");
+	
+	// ecrit la position de la borne
+	xml_element.setAttribute("x", QString("%1").arg(scenePos().x()));
+	xml_element.setAttribute("y", QString("%1").arg(scenePos().y()));
+	
+	
+	// ecrit l'orientation de la borne
+	xml_element.setAttribute("orientation", Qet::orientationToString(m_orientation));
+	// Write name and number to XML
+	
+	return(xml_element);
 }
 
 /**
@@ -79,7 +95,7 @@ void PartTerminal::paint(QPainter *p, const QStyleOptionGraphicsItem *options, Q
 	// dessin de la borne en rouge
 	t.setColor(isSelected() ? Terminal::neutralColor : Qt::red);
 	p -> setPen(t);
-    p -> drawLine(QPointF(0.0, 0.0), d->second_point);
+	p -> drawLine(QPointF(0.0, 0.0), second_point);
 	
 	// dessin du point d'amarrage au conducteur en bleu
 	t.setColor(isSelected() ? Qt::red : Terminal::neutralColor);
@@ -99,7 +115,7 @@ void PartTerminal::paint(QPainter *p, const QStyleOptionGraphicsItem *options, Q
 QPainterPath PartTerminal::shape() const
 {
 	QPainterPath shape;
-    shape.lineTo(d->second_point);
+	shape.lineTo(second_point);
 
 	QPainterPathStroker pps;
 	pps.setWidth(1);
@@ -113,7 +129,7 @@ QPainterPath PartTerminal::shape() const
  */
 QRectF PartTerminal::boundingRect() const
 {
-    QRectF br(QPointF(0, 0), d->second_point);
+	QRectF br(QPointF(0, 0), second_point);
 	br = br.normalized();
 
 	qreal adjust = (SHADOWS_HEIGHT + 1) / 2;
@@ -127,31 +143,24 @@ QRectF PartTerminal::boundingRect() const
 */
 void PartTerminal::setOrientation(Qet::Orientation ori)
 {
-    if (d->m_orientation == ori) return;
+	if (m_orientation == ori) return;
 	prepareGeometryChange();
-    d->m_orientation = ori;
+	m_orientation = ori;
 	updateSecondPoint();
 	emit orientationChanged();
 }
 
-void PartTerminal::setName(QString& name)
-{
-    if (d->m_name == name) return;
-    d->m_name = name;
-    emit nameChanged();
-}
-
 /**
 	Met a jour la position du second point en fonction de la position et de
 	l'orientation de la borne.
 */
 void PartTerminal::updateSecondPoint() {
 	qreal ts = 4.0; // terminal size
-    switch(d->m_orientation) {
-        case Qet::North: d->second_point = QPointF(0.0,  ts); break;
-        case Qet::East : d->second_point = QPointF(-ts, 0.0); break;
-        case Qet::South: d->second_point = QPointF(0.0, -ts); break;
-        case Qet::West : d->second_point = QPointF(ts,  0.0); break;
+	switch(m_orientation) {
+		case Qet::North: second_point = QPointF(0.0,  ts); break;
+		case Qet::East : second_point = QPointF(-ts, 0.0); break;
+		case Qet::South: second_point = QPointF(0.0, -ts); break;
+		case Qet::West : second_point = QPointF(ts,  0.0); break;
 	}
 }
 
diff --git a/sources/editor/graphicspart/partterminal.h b/sources/editor/graphicspart/partterminal.h
index 26c624bc9..4565468bf 100644
--- a/sources/editor/graphicspart/partterminal.h
+++ b/sources/editor/graphicspart/partterminal.h
@@ -19,8 +19,6 @@
 #define PART_TERMINAL_H
 
 #include "customelementgraphicpart.h"
-#include "QUuid"
-#include "terminaldata.h"
 
 
 
@@ -33,7 +31,6 @@ class PartTerminal : public CustomElementGraphicPart
 		Q_OBJECT
 
 		Q_PROPERTY(Qet::Orientation orientation READ orientation WRITE setOrientation)
-        Q_PROPERTY(QString name READ name WRITE setName)
 
 	
 	public:
@@ -45,7 +42,12 @@ class PartTerminal : public CustomElementGraphicPart
 
 	signals:
 		void orientationChanged();
-        void nameChanged();
+	
+		// attributes
+	private:
+		Qet::Orientation m_orientation;
+		QPointF second_point;
+
 
 		// methods
 	public:
@@ -55,7 +57,7 @@ class PartTerminal : public CustomElementGraphicPart
 			 * @return the QGraphicsItem type
 			 */
 		int type() const override { return Type; }
-        QString name() const override { return d->m_name; }
+		QString name() const override { return(QObject::tr("borne", "element part name")); }
 		QString xmlName() const override { return(QString("terminal")); }
 		void fromXml(const QDomElement &) override;
 		const QDomElement toXml(QDomDocument &) const override;
@@ -69,14 +71,11 @@ class PartTerminal : public CustomElementGraphicPart
 		void startUserTransformation(const QRectF &) override;
 		void handleUserTransformation(const QRectF &, const QRectF &) override;
 
-        Qet::Orientation orientation() const {return d->m_orientation;}
+		Qet::Orientation orientation() const {return m_orientation;}
 		void setOrientation(Qet::Orientation ori);
-
-        void setName(QString& name);
 	
 	private:
 		void updateSecondPoint();
-        TerminalData* d; // pointer to the terminal data
 	
 	private:
 		QPointF saved_position_;
diff --git a/sources/properties/propertiesinterface.h b/sources/properties/propertiesinterface.h
index d37828e0c..9f4777f47 100644
--- a/sources/properties/propertiesinterface.h
+++ b/sources/properties/propertiesinterface.h
@@ -34,8 +34,8 @@ class PropertiesInterface
 	virtual void toSettings	  (QSettings &settings, const QString = QString()) const =0;
 	virtual void fromSettings (const QSettings &settings, const QString = QString()) =0;
 	// Save/load properties to xml element
-    virtual QDomElement toXml		  (QDomDocument &xml_document) const =0;
-    virtual bool fromXml	  (const QDomElement &xml_element) =0;
+	virtual void toXml		  (QDomElement &xml_element) const =0;
+	virtual void fromXml	  (const QDomElement &xml_element) =0;
 };
 
 #endif // PROPERTIESINTERFACE_H
diff --git a/sources/properties/terminaldata.cpp b/sources/properties/terminaldata.cpp
deleted file mode 100644
index f90f3e64d..000000000
--- a/sources/properties/terminaldata.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-#include "terminaldata.h"
-
-#include <QGraphicsObject>
-
-TerminalData::TerminalData():
-    PropertiesInterface()
-{
-    init();
-}
-
-TerminalData::TerminalData(QGraphicsObject *parent):
-    PropertiesInterface(),
-    q(parent)
-{
-    init();
-}
-
-void TerminalData::init() {
-}
-
-TerminalData::~TerminalData()
-{
-
-}
-
-void TerminalData::setParent(QGraphicsObject* parent)
-{
-    q = parent;
-}
-
-void TerminalData::toSettings(QSettings &settings, const QString) const
-{
-
-}
-
-void TerminalData::fromSettings(const QSettings &settings, const QString)
-{
-
-}
-
-QDomElement TerminalData::toXml(QDomDocument &xml_document) const
-{
-    QDomElement xml_element = xml_document.createElement("terminal");
-
-    // ecrit la position de la borne
-    xml_element.setAttribute("x", QString("%1").arg(q->scenePos().x()));
-    xml_element.setAttribute("y", QString("%1").arg(q->scenePos().y()));
-
-
-    xml_element.setAttribute("uuid", m_uuid.toString());
-    xml_element.setAttribute("name", m_name);
-
-    // ecrit l'orientation de la borne
-    xml_element.setAttribute("orientation", Qet::orientationToString(m_orientation));
-    // Write name and number to XML
-
-    return(xml_element);
-}
-bool TerminalData::fromXml (const QDomElement &xml_element)
-{
-    // lit la position de la borne
-    qreal term_x = 0.0, term_y = 0.0;
-    if (!QET::attributeIsAReal(xml_element, "x", &term_x))
-        return false;
-
-    if (!QET::attributeIsAReal(xml_element, "y", &term_y))
-        return false;
-
-    m_pos = QPointF(term_x, term_y);
-
-    //emit posFromXML(QPointF(term_x, term_y));
-
-    QString uuid = xml_element.attribute("uuid");
-    // update part and add uuid, which is used in the new version to connect terminals together
-    // if the attribute not exists, means, the element is created with an older version of qet. So use the legacy approach
-    // to identify terminals
-    if (!uuid.isEmpty())
-        m_uuid = QUuid(uuid);
-
-    m_name = xml_element.attribute("name");
-
-    // lit l'orientation de la borne
-    m_orientation = Qet::orientationFromString(xml_element.attribute("orientation"));
-
-    return true;
-}
diff --git a/sources/properties/terminaldata.h b/sources/properties/terminaldata.h
deleted file mode 100644
index 620769cd8..000000000
--- a/sources/properties/terminaldata.h
+++ /dev/null
@@ -1,77 +0,0 @@
-#ifndef TERMINALDATA_H
-#define TERMINALDATA_H
-
-#include "propertiesinterface.h"
-#include "qet.h"
-
-#include <QUuid>
-#include <QPointF>
-
-class QGraphicsObject;
-
-/*!
- * \brief The TerminalData class
- * Data of the terminal. Stored in extra class so it can be used by PartTerminal and Terminal without
- * defining everything again.
- */
-class TerminalData : public PropertiesInterface
-{
-public:
-    TerminalData();
-    TerminalData(QGraphicsObject* parent);
-    ~TerminalData();
-
-    void init();
-
-    void setParent(QGraphicsObject* parent);
-
-    // Save/load properties to setting file. QString is use for prefix a word befor the name of each paramètre
-    void toSettings(QSettings &settings, const QString = QString()) const override;
-    void fromSettings(const QSettings &settings, const QString = QString()) override;
-    // Save/load properties to xml element
-    // This method is only called from the PartTerminal and should never called from the Terminal class
-    QDomElement toXml(QDomDocument &xml_element) const override;
-    bool fromXml(const QDomElement &xml_element) override;
-
-    // must be public, because this class is a private member of PartTerminal/Terminal and they must
-    // access this data
-public:
-    /*!
-     * \brief m_orientation
-     * Orientation of the terminal
-     */
-    Qet::Orientation m_orientation;
-    /*!
-     * \brief second_point
-     * Position of the second point of the terminal in scene coordinates
-     */
-    QPointF second_point;
-    /*!
-     * \brief m_uuid
-     * Uuid of the terminal.
-     *
-     * In elementscene.cpp an element gets a new uuid when saving the element. In the current state
-     * each connection is made by using the local position of the terminal and a dynamic id. In the new
-     * case, each terminal should have it's own uuid to identify it uniquely. When changing each time this
-     * uuid, the conductor after updating the part is anymore valid. So if in the loaded document a uuid exists,
-     * use this one and don't create a new one.
-     */
-    QUuid m_uuid;
-    /*!
-     * \brief m_name
-     * Name of the element. It can be used to create wiring harness tables
-     */
-    QString m_name;
-
-    /*!
-     * \brief m_pos
-     * Position of the terminal. The second point is calculated from this position and the orientation
-     * Important: this variable is only updated during read from xml and not during mouse move!
-     * It is used to store the initial position so that PartTerminal and Terminal have access to it.
-     */
-    QPointF m_pos;
-private:
-    QGraphicsObject* q{nullptr};
-};
-
-#endif // TERMINALDATA_H
diff --git a/sources/properties/xrefproperties.cpp b/sources/properties/xrefproperties.cpp
index b5a5395e6..70de62d06 100644
--- a/sources/properties/xrefproperties.cpp
+++ b/sources/properties/xrefproperties.cpp
@@ -93,12 +93,8 @@ void XRefProperties::fromSettings(const QSettings &settings, const QString prefi
  * Save to xml
  * @param xml_element: QDomElement to use for saving
  */
-QDomElement XRefProperties::toXml(QDomDocument &xml_document) const {
-
-    QDomElement xml_element = xml_document.createElement("xref");
-    xml_element.setAttribute("type", m_key);
-
-    xml_element.setAttribute("showpowerctc", m_show_power_ctc? "true" : "false");
+void XRefProperties::toXml(QDomElement &xml_element) const {
+	xml_element.setAttribute("showpowerctc", m_show_power_ctc? "true" : "false");
 	QString display = m_display == Cross? "cross" : "contacts";
 	xml_element.setAttribute("displayhas", display);
 	QString snap = m_snap_to == Bottom? "bottom" : "label";
@@ -118,8 +114,6 @@ QDomElement XRefProperties::toXml(QDomDocument &xml_document) const {
 	foreach (QString key, m_prefix.keys()) {
 		xml_element.setAttribute(key + "prefix", m_prefix.value(key));
 	}
-
-    return xml_element;
 }
 
 /**
@@ -127,7 +121,7 @@ QDomElement XRefProperties::toXml(QDomDocument &xml_document) const {
  * Load from xml
  * @param xml_element: QDomElement to use for load
  */
-bool XRefProperties::fromXml(const QDomElement &xml_element) {
+void XRefProperties::fromXml(const QDomElement &xml_element) {
 	m_show_power_ctc = xml_element.attribute("showpowerctc")  == "true";
 	QString display = xml_element.attribute("displayhas", "cross");
 	display == "cross"? m_display = Cross : m_display = Contacts;
@@ -149,7 +143,6 @@ bool XRefProperties::fromXml(const QDomElement &xml_element) {
 	foreach (QString key, m_prefix_keys) {
 		m_prefix.insert(key, xml_element.attribute(key + "prefix"));
 	}
-    return true;
 }
 
 /**
diff --git a/sources/properties/xrefproperties.h b/sources/properties/xrefproperties.h
index 9a45f2978..b16de6fc7 100644
--- a/sources/properties/xrefproperties.h
+++ b/sources/properties/xrefproperties.h
@@ -42,8 +42,8 @@ class XRefProperties : public PropertiesInterface
 
 	void toSettings	  (QSettings &settings, const QString = QString()) const override;
 	void fromSettings (const QSettings &settings, const QString = QString()) override;
-    QDomElement toXml		  (QDomDocument &xml_document) const override;
-    bool fromXml(const QDomElement &xml_element) override;
+	void toXml		  (QDomElement &xml_element) const override;
+	void fromXml	  (const QDomElement &xml_element) override;
 
 	static QHash<QString, XRefProperties> defaultProperties();
 
@@ -73,8 +73,6 @@ class XRefProperties : public PropertiesInterface
 	void setOffset(const int offset) {m_offset = offset;}
 	int offset() const				 {return m_offset;}
 
-    void setKey(QString& key) {m_key = key;}
-
 	private:
 	bool m_show_power_ctc;
 	DisplayHas m_display;
@@ -85,7 +83,6 @@ class XRefProperties : public PropertiesInterface
 	QString m_master_label;
 	QString m_slave_label;
 	int     m_offset;
-    QString m_key;
 };
 
 #endif // XREFPROPERTIES_H
diff --git a/sources/qetgraphicsitem/conductor.cpp b/sources/qetgraphicsitem/conductor.cpp
index 5846c3096..c317dbd8c 100644
--- a/sources/qetgraphicsitem/conductor.cpp
+++ b/sources/qetgraphicsitem/conductor.cpp
@@ -581,27 +581,13 @@ bool Conductor::valideXml(QDomElement &e){
 	if (!e.hasAttribute("terminal2")) return(false);
 	
 	bool conv_ok;
-    // parse l'abscisse
-    if (e.hasAttribute("element1")) {
-        if (QUuid(e.attribute("element1")).isNull())
-            return false;
-        if (QUuid(e.attribute("terminal1")).isNull())
-            return false;
-    } else {
-        e.attribute("terminal1").toInt(&conv_ok);
-        if (!conv_ok) return(false);
-    }
+	// parse l'abscisse
+	e.attribute("terminal1").toInt(&conv_ok);
+	if (!conv_ok) return(false);
 	
 	// parse l'ordonnee
-    if (e.hasAttribute("element2")) {
-        if (QUuid(e.attribute("element2")).isNull())
-            return false;
-        if (QUuid(e.attribute("terminal2")).isNull())
-            return false;
-    } else {
-        e.attribute("terminal2").toInt(&conv_ok);
-        if (!conv_ok) return(false);
-    }
+	e.attribute("terminal2").toInt(&conv_ok);
+	if (!conv_ok) return(false);
 	return(true);
 }
 
@@ -1010,23 +996,8 @@ QDomElement Conductor::toXml(QDomDocument &dom_document, QHash<Terminal *, int>
 
 	dom_element.setAttribute("x", QString::number(pos().x()));
 	dom_element.setAttribute("y", QString::number(pos().y()));
-
-    // Terminal is uniquely identified by the uuid of the terminal and the element
-    if (terminal1->uuid().isNull()) {
-        // legacy method to identify the terminal
-        dom_element.setAttribute("terminal1", table_adr_id.value(terminal1)); // for backward compability
-    } else {
-        dom_element.setAttribute("element1", terminal1->parentElement()->uuid().toString());
-        dom_element.setAttribute("terminal1", terminal1->uuid().toString());
-    }
-
-    if (terminal2->uuid().isNull()) {
-        // legacy method to identify the terminal
-        dom_element.setAttribute("terminal2", table_adr_id.value(terminal2)); // for backward compability
-    } else {
-        dom_element.setAttribute("element2", terminal2->parentElement()->uuid().toString());
-        dom_element.setAttribute("terminal2", terminal2->uuid().toString());
-    }
+	dom_element.setAttribute("terminal1", table_adr_id.value(terminal1));
+	dom_element.setAttribute("terminal2", table_adr_id.value(terminal2));
 	dom_element.setAttribute("freezeLabel", m_freeze_label? "true" : "false");
 	
 	// on n'exporte les segments du conducteur que si ceux-ci ont
@@ -1062,8 +1033,7 @@ QDomElement Conductor::toXml(QDomDocument &dom_document, QHash<Terminal *, int>
 
 /**
  * @brief Conductor::pathFromXml
- * Generate the path (of the line) from xml file by checking the segments in the xml
- * file
+ * Generate the path from xml file
  * @param e
  * @return true if generate path success else return false
  */
diff --git a/sources/qetgraphicsitem/element.cpp b/sources/qetgraphicsitem/element.cpp
index 00051e56e..2eec4f07f 100644
--- a/sources/qetgraphicsitem/element.cpp
+++ b/sources/qetgraphicsitem/element.cpp
@@ -23,7 +23,6 @@
 #include "elementprovider.h"
 #include "diagramposition.h"
 #include "terminal.h"
-#include "terminaldata.h"
 #include "PropertiesEditor/propertieseditordialog.h"
 #include "elementpropertieswidget.h"
 #include "numerotationcontextcommands.h"
@@ -561,22 +560,36 @@ DynamicElementTextItem *Element::parseDynamicText(const QDomElement &dom_element
 	return deti;
 }
 
-/*!
- * \brief Element::parseTerminal
- * Parse partTerminal from xml structure
- * \param dom_element
- * \return
- */
 Terminal *Element::parseTerminal(const QDomElement &dom_element)
 {
-
-    TerminalData* data = new TerminalData();
-    if (!data->fromXml(dom_element)) {
-        delete data;
-        return nullptr;
-    }
+	qreal terminalx, terminaly;
+	Qet::Orientation terminalo;
+	if (!QET::attributeIsAReal(dom_element, QString("x"), &terminalx)) {
+		return(nullptr);
+	}
+	if (!QET::attributeIsAReal(dom_element, QString("y"), &terminaly)) {
+		return(nullptr);
+	}
+	if (!dom_element.hasAttribute("orientation")) {
+		return(nullptr);
+	}
+	if (dom_element.attribute("orientation") == "n") {
+		terminalo = Qet::North;
+	}
+	else if (dom_element.attribute("orientation") == "s") {
+		terminalo = Qet::South;
+	}
+	else if (dom_element.attribute("orientation") == "e") {
+		terminalo = Qet::East;
+	}
+	else if (dom_element.attribute("orientation") == "w") {
+		terminalo = Qet::West;
+	}
+	else {
+		return(nullptr);
+	}
 	
-    Terminal *new_terminal = new Terminal(data, this);
+	Terminal *new_terminal = new Terminal(terminalx, terminaly, terminalo, this);
 	m_terminals << new_terminal;
 	
 		//Sort from top to bottom and left to rigth
@@ -1047,7 +1060,7 @@ QDomElement Element::toXml(QDomDocument &document, QHash<Terminal *, int> &table
 	foreach(Terminal *t, terminals()) {
 		// alors on enregistre la borne
 		QDomElement terminal = t -> toXml(document);
-        terminal.setAttribute("id", id_terminal); // for backward compatibility
+		terminal.setAttribute("id", id_terminal);
 		table_adr_id.insert(t, id_terminal ++);
 		xml_terminals.appendChild(terminal);
 	}
diff --git a/sources/qetgraphicsitem/terminal.cpp b/sources/qetgraphicsitem/terminal.cpp
index 1f7d0fe0d..090c7f03b 100644
--- a/sources/qetgraphicsitem/terminal.cpp
+++ b/sources/qetgraphicsitem/terminal.cpp
@@ -24,7 +24,6 @@
 #include "diagramcommands.h"
 #include "conductorautonumerotation.h"
 #include "conductortextitem.h"
-#include "terminaldata.h"
 
 QColor Terminal::neutralColor      = QColor(Qt::blue);
 QColor Terminal::allowedColor      = QColor(Qt::darkGreen);
@@ -40,13 +39,17 @@ const qreal Terminal::Z = 1000;
 	@param number of terminal
 	@param name of terminal
 */
-void Terminal::init(QString number, QString name, bool hiddenName) {
-
-    hovered_color_  = Terminal::neutralColor;
+void Terminal::init(QPointF pf, Qet::Orientation o, QString number, QString name, bool hiddenName) {
+	// definition du pount d'amarrage pour un conducteur
+	dock_conductor_  = pf;
+	
+	// definition de l'orientation de la borne (par defaut : sud)
+	if (o < Qet::North || o > Qet::West) ori_ = Qet::South;
+	else ori_ = o;
 	
 	// calcul de la position du point d'amarrage a l'element
-    dock_elmt_ = d->m_pos;
-    switch(d->m_orientation) {
+	dock_elmt_ = dock_conductor_;
+	switch(ori_) {
 		case Qet::North: dock_elmt_ += QPointF(0, Terminal::terminalSize);  break;
 		case Qet::East : dock_elmt_ += QPointF(-Terminal::terminalSize, 0); break;
 		case Qet::West : dock_elmt_ += QPointF(Terminal::terminalSize, 0);  break;
@@ -71,27 +74,6 @@ void Terminal::init(QString number, QString name, bool hiddenName) {
 	setZValue(Z);
 }
 
-/*!
- * \brief Terminal::init
- * Additionaly to the init above, this method stores position and orientation into the data class
- * \param pf
- * \param o
- * \param number
- * \param name
- * \param hiddenName
- */
-void Terminal::init(QPointF pf, Qet::Orientation o, QString number, QString name, bool hiddenName)
-{
-    // definition du pount d'amarrage pour un conducteur
-    d->m_pos  = pf;
-
-    // definition de l'orientation de la borne (par defaut : sud)
-    if (o < Qet::North || o > Qet::West) d->m_orientation = Qet::South;
-    else d->m_orientation = o;
-
-    init(number, name, hiddenName);
-}
-
 /**
 	initialise une borne
 	@param pf  position du point d'amarrage pour un conducteur
@@ -101,8 +83,11 @@ void Terminal::init(QPointF pf, Qet::Orientation o, QString number, QString name
 */
 Terminal::Terminal(QPointF pf, Qet::Orientation o, Element *e) :
 	QGraphicsObject(e),
-    d(new TerminalData(this)),
-    parent_element_ (e)
+	m_draw_help_line(false),
+	m_help_line     (nullptr),
+	m_help_line_a   (nullptr),
+	parent_element_ (e),
+	hovered_color_  (Terminal::neutralColor)
 {
 	init(pf, o, "_", "_", false);
 }
@@ -117,10 +102,13 @@ Terminal::Terminal(QPointF pf, Qet::Orientation o, Element *e) :
 */
 Terminal::Terminal(qreal pf_x, qreal pf_y, Qet::Orientation o, Element *e) :
 	QGraphicsObject(e),
-    d(new TerminalData(this)),
-    parent_element_  (e)
+	m_draw_help_line (false),
+	m_help_line      (nullptr),
+	m_help_line_a    (nullptr),
+	parent_element_  (e),
+	hovered_color_   (Terminal::neutralColor)
 {
-    init(QPointF(pf_x, pf_y), o, "_", "_", false);
+	init(QPointF(pf_x, pf_y), o, "_", "_", false);
 }
 
 /**
@@ -135,22 +123,15 @@ Terminal::Terminal(qreal pf_x, qreal pf_y, Qet::Orientation o, Element *e) :
 */
 Terminal::Terminal(QPointF pf, Qet::Orientation o, QString num, QString name, bool hiddenName, Element *e) :
 	QGraphicsObject    (e),
-    d(new TerminalData(this)),
-    parent_element_  (e)
+	m_draw_help_line (false),
+	m_help_line      (nullptr),
+	m_help_line_a    (nullptr),
+	parent_element_  (e),
+	hovered_color_   (Terminal::neutralColor)
 {
 	init(pf, o, std::move(num), std::move(name), hiddenName);
 }
 
-Terminal::Terminal(TerminalData* data, Element* e) :
-    QGraphicsObject(e),
-    d(data),
-    parent_element_(e)
-{
-    // TODO: what is when multiple parents exist. So the other relation is lost.
-    d->setParent(this);
-    init("_", "_", false);
-}
-
 /**
 	Destructeur
 	La destruction de la borne entraine la destruction des conducteurs
@@ -172,15 +153,15 @@ Qet::Orientation Terminal::orientation() const {
 	if (Element *elt = qgraphicsitem_cast<Element *>(parentItem())) {
 		// orientations actuelle et par defaut de l'element
 		int ori_cur = elt -> orientation();
-        if (ori_cur == 0) return(d->m_orientation);
+		if (ori_cur == 0) return(ori_);
 		else {
 			// calcul l'angle de rotation implique par l'orientation de l'element parent
 			// angle de rotation de la borne sur la scene, divise par 90
-            int angle = ori_cur + d->m_orientation;
+			int angle = ori_cur + ori_;
 			while (angle >= 4) angle -= 4;
 			return((Qet::Orientation)angle);
 		}
-    } else return(d->m_orientation);
+	} else return(ori_);
 }
 
 
@@ -257,7 +238,7 @@ void Terminal::paint(QPainter *p, const QStyleOptionGraphicsItem *options, QWidg
 	p -> setRenderHint(QPainter::SmoothPixmapTransform, false);
 	
 	// on travaille avec les coordonnees de l'element parent
-    QPointF c = mapFromParent(d->m_pos);
+	QPointF c = mapFromParent(dock_conductor_);
 	QPointF e = mapFromParent(dock_elmt_);
 	
 	QPen t;
@@ -409,11 +390,11 @@ QLineF Terminal::HelpLine() const
 */
 QRectF Terminal::boundingRect() const {
 	if (br_ -> isNull()) {
-        qreal dcx = d->m_pos.x();
-        qreal dcy = d->m_pos.y();
+		qreal dcx = dock_conductor_.x();
+		qreal dcy = dock_conductor_.y();
 		qreal dex = dock_elmt_.x();
 		qreal dey = dock_elmt_.y();
-        QPointF origin = (dcx <= dex && dcy <= dey ? d->m_pos : dock_elmt_);
+		QPointF origin = (dcx <= dex && dcy <= dey ? dock_conductor_ : dock_elmt_);
 		origin += QPointF(-3.0, -3.0);
 		qreal w = qAbs((int)(dcx - dex)) + 7;
 		qreal h = qAbs((int)(dcy - dey)) + 7;
@@ -511,10 +492,10 @@ void Terminal::hoverLeaveEvent(QGraphicsSceneHoverEvent *) {
 	@param e L'evenement souris correspondant
 */
 void Terminal::mousePressEvent(QGraphicsSceneMouseEvent *e) {
-    if (Diagram *diag = diagram()) {
-        diag -> setConductorStart(mapToScene(QPointF(d->m_pos)));
-        diag -> setConductorStop(e -> scenePos());
-        diag -> setConductor(true);
+	if (Diagram *d = diagram()) {
+		d -> setConductorStart(mapToScene(QPointF(dock_conductor_)));
+		d -> setConductorStop(e -> scenePos());
+		d -> setConductor(true);
 		//setCursor(Qt::CrossCursor);
 	}
 }
@@ -536,13 +517,13 @@ void Terminal::mouseMoveEvent(QGraphicsSceneMouseEvent *e) {
 	}
 	
 	
-    Diagram *diag = diagram();
-    if (!diag) return;
+	Diagram *d = diagram();
+	if (!d) return;
 	// si la scene est un Diagram, on actualise le poseur de conducteur
-    diag -> setConductorStop(e -> scenePos());
+	d -> setConductorStop(e -> scenePos());
 	
 	// on recupere la liste des qgi sous le pointeur
-    QList<QGraphicsItem *> qgis = diag -> items(e -> scenePos());
+	QList<QGraphicsItem *> qgis = d -> items(e -> scenePos());
 	
 	/* le qgi le plus haut
 	   = le poseur de conductor
@@ -678,10 +659,6 @@ bool Terminal::isLinkedTo(Terminal *other_terminal) {
 
 /**
  * @brief Terminal::canBeLinkedTo
- * Checking if the terminal can be linked to \p other_terminal or not
- * Reasons for not linable:
- *  - \p other_terminal is this terminal
- *  - this terminal is already connected to \p other_terminal
  * @param other_terminal
  * @return true if this terminal can be linked to @other_terminal,
  * otherwise false
@@ -708,9 +685,9 @@ QList<Conductor *> Terminal::conductors() const {
 */
 QDomElement Terminal::toXml(QDomDocument &doc) const {
 	QDomElement qdo = doc.createElement("terminal");
-    qdo.setAttribute("x", QString("%1").arg(dock_elmt_.x())); // for backward compatibility
-    qdo.setAttribute("y",  QString("%1").arg(dock_elmt_.y()));// for backward compatibility
-    qdo.setAttribute("orientation", d->m_orientation);
+	qdo.setAttribute("x", QString("%1").arg(dock_elmt_.x()));
+	qdo.setAttribute("y",  QString("%1").arg(dock_elmt_.y()));
+	qdo.setAttribute("orientation", ori_);
 	qdo.setAttribute("number", number_terminal_);
 	qdo.setAttribute("name", name_terminal_);
 	qdo.setAttribute("nameHidden", name_terminal_hidden);
@@ -762,22 +739,13 @@ bool Terminal::fromXml(QDomElement &terminal) {
 	number_terminal_ = terminal.attribute("number");
 	name_terminal_ = terminal.attribute("name");
 	name_terminal_hidden = terminal.attribute("nameHidden").toInt();
-
 	return (
 		qFuzzyCompare(terminal.attribute("x").toDouble(), dock_elmt_.x()) &&
 		qFuzzyCompare(terminal.attribute("y").toDouble(), dock_elmt_.y()) &&
-        (terminal.attribute("orientation").toInt() == d->m_orientation)
+		(terminal.attribute("orientation").toInt() == ori_)
 	);
 }
 
-/**
-    @return the position, relative to the scene, of the docking point for
-    conductors.
-*/
-inline QPointF Terminal::dockConductor() const {
-    return(mapToScene(d->m_pos));
-}
-
 /**
 	@return le Diagram auquel cette borne appartient, ou 0 si cette borne est independant
 */
@@ -792,10 +760,6 @@ Element *Terminal::parentElement() const {
 	return(parent_element_);
 }
 
-QUuid Terminal::uuid() const {
-    return d->m_uuid;
-}
-
 /**
  * @brief Conductor::relatedPotentialTerminal
  * Return terminal at the same potential from the same
diff --git a/sources/qetgraphicsitem/terminal.h b/sources/qetgraphicsitem/terminal.h
index 83a855a19..7b9a488cc 100644
--- a/sources/qetgraphicsitem/terminal.h
+++ b/sources/qetgraphicsitem/terminal.h
@@ -23,12 +23,9 @@
 class Conductor;
 class Diagram;
 class Element;
-class TerminalData;
-
 /**
 	This class represents a terminal of an electrical element, i.e. a possible
 	plug point for conductors.
-    This class handles all mouse events for connecting conductors
 */
 class Terminal : public QGraphicsObject
 {
@@ -42,7 +39,6 @@ class Terminal : public QGraphicsObject
 	public:
 		Terminal(QPointF,      Qet::Orientation, Element * = nullptr);
 		Terminal(qreal, qreal, Qet::Orientation, Element * = nullptr);
-        Terminal(TerminalData* data, Element *e = nullptr);
 		Terminal(QPointF,      Qet::Orientation, QString number, QString name, bool hiddenName, Element * = nullptr);
 		~Terminal() override;
 	
@@ -67,7 +63,6 @@ class Terminal : public QGraphicsObject
 		int       conductorsCount     () const;
 		Diagram  *diagram             () const;
 		Element  *parentElement       () const;
-        QUuid uuid                    () const;
 	
 	QList<Conductor *> conductors() const;
 	Qet::Orientation orientation() const;
@@ -111,23 +106,24 @@ class Terminal : public QGraphicsObject
 		static QColor forbiddenColor;
 	
 	private:
-        bool               m_draw_help_line{false};
-        QGraphicsLineItem *m_help_line{nullptr};
-        QGraphicsLineItem *m_help_line_a{nullptr};
-
-
-    TerminalData* d;
+		bool               m_draw_help_line;
+		QGraphicsLineItem *m_help_line;
+		QGraphicsLineItem *m_help_line_a;
 
 	/// Parent electrical element
-    Element *parent_element_{nullptr};
+	Element *parent_element_;
+	/// docking point for conductors
+	QPointF dock_conductor_;
 	/// docking point for parent element
 	QPointF dock_elmt_;
+	/// terminal orientation
+	Qet::Orientation ori_;
 	/// List of conductors attached to the terminal
 	QList<Conductor *> conductors_;
 	/// Pointer to a rectangle representing the terminal bounding rect;
 	/// used to calculate the bounding rect once only;
 	/// used a pointer because boundingRect() is supposed to be const.
-    QRectF *br_{nullptr};
+	QRectF *br_;
 	/// Last terminal seen through an attached conductor
 	Terminal *previous_terminal_;
 	/// Whether the mouse pointer is hovering the terminal
@@ -141,8 +137,7 @@ class Terminal : public QGraphicsObject
 	bool name_terminal_hidden;
 	
 	private:
-    void init(QString number, QString name, bool hiddenName);
-    void init(QPointF pf, Qet::Orientation o, QString number, QString name, bool hiddenName);
+	void init(QPointF, Qet::Orientation, QString number, QString name, bool hiddenName);
 };
 
 /**
@@ -152,6 +147,14 @@ inline int Terminal::conductorsCount() const {
 	return(conductors_.size());
 }
 
+/**
+	@return the position, relative to the scene, of the docking point for
+	conductors.
+*/
+inline QPointF Terminal::dockConductor() const {
+	return(mapToScene(dock_conductor_));
+}
+
 /**
 	@return the number of terminal.
 */
diff --git a/sources/qetproject.cpp b/sources/qetproject.cpp
index f6627d6c3..16be9c94d 100644
--- a/sources/qetproject.cpp
+++ b/sources/qetproject.cpp
@@ -1582,10 +1582,11 @@ void QETProject::writeDefaultPropertiesXml(QDomElement &xml_element) {
 
 	// export default XRef properties
 	QDomElement xrefs_elmt = xml_document.createElement("xrefs");
-    foreach (QString key, defaultXRefProperties().keys()) {
-        defaultXRefProperties()[key].setKey(key);
-        QDomElement xref_elmt = defaultXRefProperties()[key].toXml(xml_document);
-        xrefs_elmt.appendChild(xref_elmt);
+	foreach (QString key, defaultXRefProperties().keys()) {
+		QDomElement xref_elmt = xml_document.createElement("xref");
+		xref_elmt.setAttribute("type", key);
+		defaultXRefProperties()[key].toXml(xref_elmt);
+		xrefs_elmt.appendChild(xref_elmt);
 	}
 	xml_element.appendChild(xrefs_elmt);