Okay so I don't know what's going on. I made a Sim and his Brother. One Sim had 2 kids and a wife, and now their relationships are all screwed up. I can't make my Sim the uncle to the children, only B...
I LOVE "cas.fulleditmode", my game does not :'( First time I got lag. The second time, I took a Sim into Cas that was not in my household, and when I exited Cas the male Sim I had been editing was the only playable Sim. He was not added to the household though. I exited the game without saving. I hope we get the option to take our Sims into Cas in a patch... or that they make "cas.fulleditmode" more stable!