I would try the RealTrack Medley Maker feature to fix the bad chords by using some of the available slots to create a single arrangement of the Brent Mason fingerpick acoustic guitar track combination. I've attached a screenshot.

I would approach the current issue you have shown with bars 7,13,22,and 26 by opening that track with the Audio Editor, highlighting those bars and selecting the 'Fix Sour Notes' option from the Edit Menu.

I've attached the help file description of the Fix Sour Notes feature and another image of the RealTrack Medley Maker set to change slots every two bars with each slot occupied by the same Brent Mason Solo guitar. It will sound seamless but BIAB is regenerating that instrument every two bars.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Screenshot 2023-08-24 151723.jpg (259.32 KB, 91 downloads)
Screenshot 2023-08-24 164521.jpg (92.64 KB, 90 downloads)

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.