BuddyPress.org

Chouf1: I have wp_, bb_ and bp_ tables inside the same database.

DJ: Yes. I prefer the way BB handles forums to BP’s – plus it is easier to modify a BB theme to mesh with BP than it is to modify the groups and forums.

As to my original question, I moved my original BB forums to a defunct category, then re-created the themes from inside BP. I’m now able to post to those BB forums from within BP.