[OPEN] [DU] Roommates get replaced in dorm often

@crinrictI noticed this happens when you go to edit something in CAS or Build Mode. E.g. while I had two characters in a dormitory, I went to edit in Build Mode the other two, one I made it only for males, the other only for members of the art association. Doing so obviously meant the game had to reassign the NPCs.

EDIT: ok, the problem has started to get more serious when I change dormitory, I put my sims in Darkwing House, where every time I open the save there's new roommates.