diff --git a/sources/elementspanelwidget.cpp b/sources/elementspanelwidget.cpp
index 7baf0afbe..0fdc60edb 100644
--- a/sources/elementspanelwidget.cpp
+++ b/sources/elementspanelwidget.cpp
@@ -17,6 +17,7 @@
 */
 #include "elementspanelwidget.h"
 #include "diagram.h"
+#include "qetgraphicsitem/conductor.h"
 #include "editor/ui/qetelementeditor.h"
 #include "elementscategoryeditor.h"
 #include "qetapp.h"
@@ -652,6 +653,13 @@ void ElementsPanelWidget::duplicateDiagram()
 				elmt->newUuid();
 				new_diagram->restoreText(elmt);
 			}
+			else if (Conductor *cond = dynamic_cast<Conductor *>(item)) {
+				// Same reasoning for conductors: conductor.uuid is the PRIMARY
+				// KEY of the conductor table, and its insert is a plain INSERT,
+				// so a duplicated uuid fails and the wire silently disappears
+				// from the wiring list and the per-element wire count.
+				cond->newUuid();
+			}
 		}
 	}
 
diff --git a/sources/qetgraphicsitem/conductor.cpp b/sources/qetgraphicsitem/conductor.cpp
index 546f64b3e..e04288107 100644
--- a/sources/qetgraphicsitem/conductor.cpp
+++ b/sources/qetgraphicsitem/conductor.cpp
@@ -1010,7 +1010,13 @@ bool Conductor::fromXml(QDomElement &dom_element)
 		//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()));
+	m_uuid = QUuid(dom_element.attribute(QStringLiteral("uuid")));
+	if (m_uuid.isNull()) {
+			//Absent, empty or malformed: mint one. A null uuid is not a usable
+			//identity -- every conductor carrying one would collide with every
+			//other on the conductor table's primary key.
+		m_uuid = QUuid::createUuid();
+	}
 
 	setPos(dom_element.attribute("x", nullptr).toDouble(),
 		   dom_element.attribute("y", nullptr).toDouble());