Opening an autocad file that contain  a pattern and wanting to edit the geometry, the hatch is not updated (which is the case if you refer back and create the hatch with DraftSight). In fact, in the options, on not imported hatch,  i don't have the flag (and I can not put it) the "keep the relationship between hatch and delimitation." (see attached image).

It 's so or is there a way to reconnect, or the only way is to do it again?