How I deal with it here is a simple method, but probably not for everyone.
Once I open a BiaB file in RB I am done generating the whole song all the time.

So I simply use the Make All Tracks regular Tracks option.
Then RB generates whatever track(s) & sections I select. Essentially it is a reverse workflow.
RB generates nothing unless you specifically select the track(s)/region. Otherwise, why did you leave BiaB at that point(?)

I do not work here, but the benefits are still awesome
Make your sound your own!