[CHEAT] Edit relationship in cas not saving (Partner)

I am having a similar issue, however, it seems to be affecting more than just CAS, as with the new Royalty and Legacy pack, every time my sims woohoo, they get a sentiment that they've seen each other doing something scandalous. They also won't autonomously perform romantic interactions with each other, and my sims continue to get calls from other sims that my sims should consider a relationship with each other even though they are already in a relationship.

I do have Lumpinou's RPO mod in my mods folder, but I've been playing with mods off since before I started this save. I did remove the mods entirely and tried to adjust the relationship again, but that also hasn't worked.