diff --git a/sources/diagramcommands.cpp b/sources/diagramcommands.cpp
index 2922c32b1..763f1f987 100644
--- a/sources/diagramcommands.cpp
+++ b/sources/diagramcommands.cpp
@@ -75,6 +75,13 @@ void PasteDiagramCommand::redo()
 	{
 		first_redo = false;
 
+		//make new uuid for every pasted conductor, because old uuid are
+		//the uuid of the copied conductor
+		const QList <Conductor *> all_pasted_conductors = content.conductors();
+		for (Conductor *c : all_pasted_conductors) {
+			c -> newUuid();
+		}
+
 		//this is the first paste, we do some actions for the new element
 		const QList <Element *> elmts_list = content.m_elements;
 		for (Element *e : elmts_list)
diff --git a/sources/qetgraphicsitem/conductor.cpp b/sources/qetgraphicsitem/conductor.cpp
index 291608620..546f64b3e 100644
--- a/sources/qetgraphicsitem/conductor.cpp
+++ b/sources/qetgraphicsitem/conductor.cpp
@@ -91,6 +91,7 @@ Conductor::Conductor(Terminal *p1, Terminal* p2) :
 		//set Zvalue at 11 to be upper than the DiagramImageItem and element
 	setZValue(11);
 	m_previous_z_value = zValue();
+	m_uuid = QUuid::createUuid();
 
 		//Add this conductor to the list of conductors of each of the two terminals
 	bool ajout_p1 = terminal1 -> addConductor(this);
@@ -1005,6 +1006,12 @@ void Conductor::pointsToSegments(const QList<QPointF>& points_list) {
 */
 bool Conductor::fromXml(QDomElement &dom_element)
 {
+		//Older project files have no conductor uuid attribute at all --
+		//generate one on load, same treatment terminal uuids got when
+		//that field was introduced (see terminal1/terminal2 handling in
+		//toXml() below).
+	m_uuid = QUuid(dom_element.attribute("uuid", QUuid::createUuid().toString()));
+
 	setPos(dom_element.attribute("x", nullptr).toDouble(),
 		   dom_element.attribute("y", nullptr).toDouble());
 
@@ -1043,6 +1050,7 @@ QDomElement Conductor::toXml(QDomDocument &dom_document,
 {
 	QDomElement dom_element = dom_document.createElement("conductor");
 
+	dom_element.setAttribute("uuid", m_uuid.toString());
 	dom_element.setAttribute("x", QString::number(pos().x()));
 	dom_element.setAttribute("y", QString::number(pos().y()));
 	
diff --git a/sources/qetgraphicsitem/conductor.h b/sources/qetgraphicsitem/conductor.h
index dc4d5586b..91ca92afb 100644
--- a/sources/qetgraphicsitem/conductor.h
+++ b/sources/qetgraphicsitem/conductor.h
@@ -21,6 +21,7 @@
 #include "../conductorproperties.h"
 
 #include <QGraphicsPathItem>
+#include <QUuid>
 
 class ConductorProfile;
 class ConductorSegmentProfile;
@@ -77,6 +78,8 @@ class Conductor : public QGraphicsObject
 		int type() const override { return Type; }
 		Diagram *diagram() const;
 		ConductorTextItem *textItem() const;
+		QUuid uuid() const {return m_uuid;}
+		void newUuid() {m_uuid = QUuid::createUuid();}	//create new uuid for this conductor
 		void updatePath(const QRectF & = QRectF());
 
 		//This method do nothing, it's only made to be used with Q_PROPERTY
@@ -205,6 +208,7 @@ class Conductor : public QGraphicsObject
 		Highlight must_highlight_;
 		bool m_valid;
 		bool m_freeze_label = false;
+		QUuid m_uuid;
 
 			/// QPen et QBrush objects used to draw conductors
 		static QPen conductor_pen;