FD. In a typical BIAB session I would do a number of verses and choruses. Each one will be a little different. Let's say I do four and there is drums, bass, guitar, piano. I would end up exporting 4 .wav files, each with 4 verses. You can split these in your DAW and use what you want. Sometimes the way it churned out the piano in verse 2 really just works great, better than verse 1, so you use that twice. That's a starting point. You can then get into splitting it up further and moving chunks around. Generally, they still fit musically, although not always.