Use the same pattern for move_into than _move to prevent concurrency

(transplanted from f57702fc015c87566146ee11623d8481ff2388c8)

tryton/gui/window/view_form/view/list.py

@@ -126,6 +126,10 @@ class AdaptModelGroup(gtk.GenericTreeModel):
         group = parent.children_group(self.children_field, check_load=True)
         if group is not record.group:
             record.group.remove(record, remove=True, force_remove=True)
+            # Don't remove record from previous group
+            # as the new parent will change the parent
+            # This prevents concurrency conflict
+            record.group.record_removed.remove(record)
             group.add(record)
             record.modified_fields.setdefault(record.parent_name or 'id')
         group.move(record, 0)