Is it possible to open the family tree or relationship of unplayed sims in mccc?

I think you should ask this over in the MCCC thread. Not that I'm trying to be rude or anything, just that Bonxie is the one you need to talk to about this. I use this mod, too, but haven't fully explored all it has to offer. I just restarted a game save, fresh, due to some whacked out family trees. While there is a way to restore familial relationships via this mod, it totally broke Erik's tree. His father was his father, but his mother was unknown. I reconnected him to his four siblings, but when I went into the household of his father, mother and youngest brother and reconnected them through cas.fulleditmode, it caused Erik to be his father's step-son. :open_mouth: His youngest brother was his full brother, however. Face/palm. I tried various ways to sort this out. I should have asked over on the MCCC thread or even over at Deaderpool's Discord, but I didn't. Other things were troubling me about this game save, so it was easier for me in the long run to just start anew. The MCCC thread can be found in the Modding heading under Gameplay mods.

Best of luck!