Purely from a workflow point of view, you might find it easier to do many fewer than 12 variations, say 4 or so, or, if you are picky like me, do them 1 at a time. Play each solo through in BAIB and only export the individual solos or "sets" (depending on how you do it) that show promise using drag and drop to separate tracks in your sequencer. That way you avoid the high number of BAIB solos that would never be useful in any circumstances. You might be left with four or five tracks with elements you can then comp together, which is easier to manage than one linear set of 12 takes end to end on one track. In Sonar, the rest is easy, as you can just use the scissors tool (with "snap to" off) to cut the solos into phrases (or part phrases) and then the mute tool to mute those bits that you don't like. Once you have a full solo comprised of individudal phrases over the four or five tracks, you can render it to a single track and delete the dross. For 16 bars, this can take less than 5 minutes start to finish. You can also use V-Vocal (or Melodyne if you have it) to change individual notes, lengthen notes, shorten pauses etc. Piece of cake really...

Feel free to ignore all of the above.

Brian