Index: sources/gui/qml/pages/pretreatment/PreTreatmentInstallStack.qml
===================================================================
diff -u -r52d17dab2211c2e4d9160c55c316ad7a40ce4d6c -r0975a67dd4e4673b9a7b226bfea02cbfa489c418
--- sources/gui/qml/pages/pretreatment/PreTreatmentInstallStack.qml	(.../PreTreatmentInstallStack.qml)	(revision 52d17dab2211c2e4d9160c55c316ad7a40ce4d6c)
+++ sources/gui/qml/pages/pretreatment/PreTreatmentInstallStack.qml	(.../PreTreatmentInstallStack.qml)	(revision 0975a67dd4e4673b9a7b226bfea02cbfa489c418)
@@ -24,6 +24,12 @@
 
     property int subStepIndex: PreTreatmentInstallStack.Step.BloodSetTubing
 
+    onVisibleChanged: {
+        if (visible) {
+            _headerBar.activeStack = stackView
+        }
+    }
+
     signal goToNextStep()
     signal goToPreviousStep()
 
@@ -54,7 +60,7 @@
             goToPreviousStep ()
             break
         case PreTreatmentInstallStack.Step.BloodLines:
-            // cannot go back from here
+            page ( _preTreatmentBloodSetTubing )
             break
         case PreTreatmentInstallStack.Step.PressureLinesAndDialyzer:
             page ( _preTreatmentBloodLines )
@@ -68,6 +74,8 @@
     }
 
     function confirmButtonText() {
+        if ( vSettings.advancedMode ) { return qsTr("Auto Load") }
+
         switch ( _root.subStepIndex ) {
         case PreTreatmentInstallStack.Step.BloodSetTubing:
             return qsTr("Auto Load")
@@ -79,10 +87,6 @@
         }
     }
 
-    function backEnabled() {
-        return subStepIndex !== PreTreatmentInstallStack.Step.BloodLines
-    }
-
     // ----- Screens definitions
     PreTreatmentBase { id: _preTreatmentBloodSetTubing
         instructionBased    : true