> What I'm hoping for is to be able to hear just chords playing (which soloing the chord track does), and then for any changes made to chords to be reflected immediately in the chord track without the need to regenerate it. Suspect it isn't possible, but am ever-hopeful given the resourcefulness of forum contributors!

It would help if you described what you are trying to do. For example, the output chords dialog (in 2023) does have a setting to output chords to a selected track (e.g. utility track 1). And if you set that, utility track 1 will always contain the chord track, and it gets updated. And this will persist between songs and sessions, so you’d always hear that, until you turn that setting off. That would be useful if you had some type of plugin or midi module that you were using for every song.
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If instead, you only want a chord track for certain songs, then that’s the one you generate as you describe. It doesn’t update the chords with each play, because it hasn’t remembered the specific settings you’ve made for each chord track in your song (like octave range, chord types etc.). So you need to manually re-do that command if you change the chords. In the future, perhaps BiaB could remember and store the chord track settings for each track, and then it could auto-update. ( This is planned)

Have Fun!
Peter Gannon
PG Music Inc.