Index: sources/gui/qml/pages/MainStack.qml
===================================================================
diff -u -r8cf828e5768d491c3e329c39b108624832054e94 -r07121b02499a4c929c5b5e8bd804a67539574c1b
--- sources/gui/qml/pages/MainStack.qml	(.../MainStack.qml)	(revision 8cf828e5768d491c3e329c39b108624832054e94)
+++ sources/gui/qml/pages/MainStack.qml	(.../MainStack.qml)	(revision 07121b02499a4c929c5b5e8bd804a67539574c1b)
@@ -40,16 +40,13 @@
 
     property var currentScreen: stackView.currentItem
 
-    signal isCreateRx(bool vState) // pass upstream to HeaderBar
-
     stackView.initialItem   : _root.initialItem
 
     // Standby / Disinfection
     DisinfectStack                  { id: _disinfectStack                   }
     // Pre Treatment
-    PreTreatmentStack               { id: _preTreatmentStack
-        onIsCreateRxChanged     : _root.isCreateRx(_preTreatmentStack.isCreateRx)
-    }
+    PreTreatmentStack               { id: _preTreatmentStack                }
+
     // In TreatmentStack
     TreatmentStack                  { id: _treatmentStack                   }