Unfortunately this method hasn't worked for me. As I stated previously, when soloing (for an example 12-string strumming guitar), it could start with backbeat strumming from high neck position, or even worse, start with long holding notes for two bars. It's completely random, there is no control over it, except regenerating track, which most likely moves to the problem to another position.

I resolved the problem by creating 4 WAV export variations of generated tracks, which I then load to DAW and crossfade between the tracks when the problems raise. Another possible fix is using the cut/paste method, but it's very cumbersome as you there is quite a lot of crossfading required between the slices.

Additionally I stumbled into a problem of BB seemingly having max bar-length of somewhere around 150-250. After trying to insert more bars it simply crashes. I couldn't figure out better way to structure the song, as it doesn't follow closely to usual ABAB -variations, but has lots of differing sections. I had to make the song with two different song files and glue 'em in DAW.