I import rhythm tracks from BIAB into RealBand and record my steel with a dry signal. You can re do parts of your recorded track you don't like by punchin in a better part or you can cut and paste from one part of the track to another, then I open the mixer and play around with the tracks until I like what I hear.
I just opened Real Band for the first time and loaded up a couple BIAB files... no matter what I load, some of the tracks are not 'aligned' ... they don't all play 'in sync'... wassup wit dat ?