Clear tree_states_done only on screen clear and reset views

issue10446
review362011002
(grafted from ab9ce1d26e1cf3dd1386063a0ba4bb297a6b3a8e)

--HG--
branch : 6.0

tryton/gui/window/view_form/screen/screen.py

@@ -910,7 +910,6 @@ class Screen(SignalEvent):
         return json_domain
 
     def load(self, ids, set_cursor=True, modified=False, position=-1):
-        self.tree_states_done.clear()
         self.group.load(ids, modified=modified, position=position)
         self.current_view.reset()
         if ids and self.current_view.view_type != 'calendar':
@@ -1149,6 +1148,9 @@ class Screen(SignalEvent):
     def clear(self):
         self.current_record = None
         self.group.clear()
+        self.tree_states_done.clear()
+        for view in self.views:
+            view.reset()
 
     def on_change(self, fieldname, attr):
         self.current_record.on_change(fieldname, attr)