Index: sources/gui/qml/pages/pretreatment/create/PreTreatmentCreate.qml
===================================================================
diff -u -r13d04e674e9d22091bcc72b97574bbba21fdc9c9 -r78c6f3baf3fec4a3fac96707ef694a753e7f41e2
--- sources/gui/qml/pages/pretreatment/create/PreTreatmentCreate.qml	(.../PreTreatmentCreate.qml)	(revision 13d04e674e9d22091bcc72b97574bbba21fdc9c9)
+++ sources/gui/qml/pages/pretreatment/create/PreTreatmentCreate.qml	(.../PreTreatmentCreate.qml)	(revision 78c6f3baf3fec4a3fac96707ef694a753e7f41e2)
@@ -37,7 +37,15 @@
 
     onConfirmClicked        : vTreatmentCreate.parametersValidated ? _preTreatmentCreateContent.confirm() : _preTreatmentCreateContent.validate()
 
-    onBackClicked           : vTreatmentCreate.doCancel()
+    onBackClicked           : {
+        if ( vTreatmentCreate.parametersValidated ) {
+            vTreatmentCreate.doCancel()
+        }
+        else {
+            vPreTreatmentAdjustmentInitTreatment.doCancel()
+            _preTreatmentCreateContent.enableEditing()
+        }
+    }
 
     function clear( vValue ) {
          if ( ! vValue ) return