[IMP] mrp: activity on MO if the linked SO is modified

return the production_id and the responsible if it exist on
the move instead of returning the origin moves. We can deduce that
if a production is linked to a move and this MO still ongoing then
it should be the upperstream document.

addons/mrp/models/stock_move.py

@@ -249,6 +249,12 @@ class StockMove(models.Model):
                 vals.update({'lot_id': lot.id})
             self.env['stock.move.line'].create(vals)
 
+    def _get_upstream_documents_and_responsibles(self):
+            if self.created_production_id and self.created_production_id.state not in ('done', 'cancel'):
+                return [(self.created_production_id, self.created_production_id.user_id)]
+            else:
+                return super(StockMove, self)._get_upstream_documents_and_responsibles()
+
 
 class PushedFlow(models.Model):
     _inherit = "stock.location.path"