more flexibility for managing Multitrack Songs

This is interesting. Let me see if I understand you correctly:
You do create 2 (or more) versions of each song, one as a standard song name and one with RV in the song name. Then you create for your LIVE gig a playlist using the “standard” songs and then you create another playlist for rehearsal by using the other song name with RV in it, so the song definitions don’t get messed up.
mmmh, that seems like an acceptable workaround. Of course, better would be if the song definitions can also be stored within the playlist definition,. So you create just different playlists according to your requirement and having just one set of Multitrack Songs.
But thanks for the idea anyway – appreciate your quick help