Mat,

I have had "enharmonic problems" also in earlier setups.

In spite of the root position, C6 can become Am7, or Cmaj7 can become Em7. However this does not have any practical influence on what is coming out of the Voice Works.

I took up these problem with PGMusic and T C helicon years ago, but they both answered they adhered strictly to the official MIDI protocol. So in other words they were not to blame!

But now the result can but totally unpredictable, also sometimes the changes do not shift, although in the BB spreadsheet the chords are changing. Yesterday however, everything functioned OK.
What I am afraid of now, is that suddenly on a gig it won’t work correctly.

Brgds,
Tonnie