Scenario: avoid marking loaded scenario data as modified, that created unwanted copies in database

src/Model/Status.py

@@ -34,6 +34,7 @@ class StudyStatus(object):
         self._status = Status.EDIT
         self._scenario = scenario
         self._saved = True
+        self._loading = False
 
     @property
     def scenario_id(self):
@@ -86,6 +87,15 @@ class StudyStatus(object):
     def is_saved(self):
         return self._saved
 
+    def is_loading(self):
+        return self._loading
+
+    def start_loading(self):
+        self._loading = True
+
+    def stop_loading(self):
+        self._loading = False
+
     def save(self):
         logger.debug("model status set as saved")
         self._saved = True
@@ -97,6 +107,9 @@ class StudyStatus(object):
         self._saved = True
 
     def modified(self):
+        if self._loading:
+            return
+
         if self._saved:
             self.version += 1