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

I couldn't find any other reports on cas edits that won't go through to change a sim to a spouse, specifically, so I am posting here. I had two instances like this. One my sim's spouse died but cas would not let her have a new spouse, only a partner (would them being vampires make a difference?). The other was two sims living together but not married who had a child. When I tried to make them spouses in cas I saw them showing as sisters and in the new family tree they show as half-sisters. I do not use any mods or cc.