I need to set the position of the leader's arrow of an annotation !

my solution is to create a point entities at the right coordinate, then attach the leaders of annotations to this point, lastly i select the point and delete it.

but problem come from this, i can't save the drawing. Here is the situation:

i put  annotations and their leaders on specific coordinates, then i save the drawing ,when i reopen the drawing, it become that shit

please help me , any thoughts would be nice!!!