Terra has stayed dead for a while. THe rest of Terra have been clones.
But after Rebirth, Raven and KF(Wallace) had a relationship, not BB.
Raven is around Dick's age, when I think of her it's always like that and Damian is 13 yo so their relationship makes me unconfortable.
Raven's mom mentioned Raven is 16 now in Marv Wolfman's Raven:daughter of darkness(2018)
I've never been a fan of this ship but the new movie made me alright with happening in that universe and that universe only. It was...nice. The only time I didn't like it was when Raven literally cried Damian back to life (but that's a trope in fiction that I've always hated). Outside of the animated movies though? Absolutely not.
I'm still holding out some hope for Raven and Gar. As off and on as they were for years, it is so not fair that the last thing they did before Flashpoint was get back together. That's just cruel lol