I think I know what the problem is. If I'm correct there won't be a solution forthcoming any time soon.

I have a bunch of questions that I am preparing wrt RealTracks, soon to be posted.

Someone has to take the recordings the RealTrack artists make and categorize them.
It's likely the artists themselves or a designated PGMusic employee.
Whoever it is that is categorizing the recordings, needs to have a fantastic ear, or problems will arise.

If the person miscategorizes chords, then we would arrive at a situation I am facing now.
The RealTrack artists record hundreds of chords in all different genres.
For genre 'X', Cm9 chords need to put in their correct 'bin'.
The same goes for Am7b5 and D7#9 etc. etc.
Because when a song is regenerated, chords need to be sounded for the chord that was typed in.
For each chord there will likely be numerous takes, inversions etc. of the chord.
But if someone has miscategorized chords, then they will not match the chord that was input by the user in the chord entry screen.

A BIAB user for more than 30 years (if you can believe it) !