I'm still working on this so thanks for hanging in there with me...

@musocity - thanks for the tip on the Ticket directory. I didn't know it existed but that's exactly what I was looking for. As it turns out, the contents of my Plugin Folders Directory are the same yours. But the BBPluginDebug.txt file might hold some clues.

@MusicStudent - where did you get 5.1.4? The support page I'm going to still shows 5.0.9.

I'm pursuing an idea that, for whatever reason, the tracks in the style in my new song are bound to an 'old' directory. I've found that multi-riffs and a few solos using new tracks in that same song correctly render to the 'default' directory.

I'll be setting up a few test cases to see if my theory holds up.

Learning something new every day from all of you!

Thanks again,
Don