Can't set two parents for Sims in CAS

I eventually found a fix, but they are uploaded as "Bale's Broken Household" if you still want to check out the bug.

The kids originally had two parents that I deleted and tried to replace with two new parents. I discovered that if you change the kids' relationships with the original parents to "Household Member" before you delete them, then you can give them two new parents with no problem.

Would you mind uploading them to the gallery and post the name here ?

I did that and the children still only have one parent. The other is listed as step-father. 

One of the parents has a faceless, nameless parent of his own showing up on the family tree and only when I'm on his children's genealogy, not his own, even though I don't remember ever giving him a parent. I doubt that would be affecting this issue though.

Can you place them in the game and check their family tree ?

Hi, it is a household from my library that I have never used in live mode. 

Hi ​ 

is this for a household you newly created or did you take them to CAS with the cheat ?

If it's the second, could you check the family tree of the children if they already have a phantom parent ?