A couple of things you may or may not know about. First, no need to do anything in Biab first. RB will do it all from scratch. Create the chord grid just like in Biab, select a style, right click on any empty track, select what you want to do. What's cool about RB is you can put any style on any track or any part of a track with one mouse click plus you're not limited to 7 parts like Biab. Just to experiement a little, I like to create 3 or 4 different versions of some of the instruments in RB (it has 48 tracks, remember) and then listen to them througout the song by muting some and hearing others and then decide what I want to keep and delete the rest. Also, you can change the cnord grid for drum fills or alternate chords and create more tracks without changing the ones you already have. Can't do that in Biab.

Second, one reason you might want to start in Biab first is the Real Track generation times. Biab is much faster than RB is when doing a whole song at one time if you're using a lot of RT's. In that case, don't open the Biab song itself in RB because that takes forever plus you have the "Biab tracks" thing to mess with. No, convert all the Biab tracks to audio and use the Drag and Drop (D&D) function straight into RB. There's a thread in the Off Topic forum where a guy posted a video explaining exactly how that works. He's using Sonar but it's the exact same thing with RB. Keep in mind if all you're doing is one track at a time you may as well start with RB in the first place but if it's 5 or 7 RT's then Biab is faster and use D&D into RB. Play with it you'll see what I mean.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.