Sim's disappearing from my family tree.

Normal Tree

First time tree broke, My married sims became siblings once turned into elders

After deleting Manuel from my game and readding him back, using MCCC to add his relationships back, His children after awhile broke and separated between him and Bruce.

Last break, One of his children died due to story progression and he got removed off the tree completely.

I have listed multiple pictures of my family tree breaking in multiple variations. The first break, My two married sims (Bruce and Manuel) somehow got turned into siblings even though they never were. That happened after they both aged into elders.

The second break happened after I deleted Manuel from the world and manually added his relationships back using MCCC. The tree was correct after some correcting and went on about my gameplay, A few in-game days I opened the tree again and Bruce and Manuel's children all broke out, either they becoming step-children or one not being fathered by the other (They are all Bruce and Manuel's biological children)

The Third break happened after Lee (One of the children) Bruce and Manuel died, Lee no longer appeared on the family tree. I luckily make my own family trees but as a family gameplay person, the family tree constantly breaking is making me not want to play anymore as it is super annoying.

I wish it to be fixed please..