DrDan, well, in prior years you would be correct. But since I want to CHANGE my workflow (which is currently the one you suggest) so that I do MORE in BiaB and LESS in my DAW, THEN...I'd like to try it with an existing song. Frankly, the new features in BiaB are exciting enough to make me want to try a different workflow, and it's been a long, LONG time since that's happened...
So I'll gladly engage the joke responses to get there.
My dunce cap is still at the ready, but not because I shouldn't be exploring a new workflow...
Ha!(?)