Update:
I arranged a simple blues shuffle style in BIAB, then I opened a new project in Sonar, opened the BIAB VST plugin and selected the blues shuffle song arrangement with File. I had replaced the original Resophonic guitar track in the style arrangement with a Baritone guitar. The VST listed the original/deleted Resophonic guitar but not the Baritone. I added the Baritone to the VST file and then transferred all the instruments to the Sonar project. Although the Resophonic was listed as a track in the VST it did not transfer. The 12-bar arrangement in C reproduced correctly in the VST screen unlike the last song I tried to transfer via VST.

The conclusions I'm drawing from this week's work with BIAB & the VST Plugin are that (1) each song project may or may not work/transfer from BIAB using the VST in the same way it did the last time I used it - vigilance is important - always check you work; (2) the VST is a work-in-progress; (3) that although the VST plugin may not have been designed to transfer a perfect copy of a BIAB arrangement/song to a DAW, it does a pretty good job for a brand new BIAB app; (4) veteran BIAB users and Forum members are a helpful lot, thanks again, I'm glad you're here.

Regards,

Keep on Rockin'
Sonny Ray