I apologize for being unclear on that. I meant that anyone in the family that Grimmy has come to call on will no longer appear in the family tree. Anyone who is still alive will still be there.
Thank you for the clarification.
It would have been quite disturbing to move a family and then find out the familymembers weren't related anymore...
Although I may not try moving at all, as I created a brand new game yesterday to test out the major bugs I'm experiencing (travelling messes up the game every time) AND they happen in this new file too. I don't think moving my legacy family to a new city / savefile would help anything. I just have to live with the fact that I have purchased an EP which I can not play... I only got it few weeks ago and could never travel as the game breaks every time.