Hi Jason.
I didn't realise that Audio Edit is for the audio track only in 2019. In 2024, it's possible to use Audio Edit on any track. It is possible to copy or move the Soloist track to the Audio track using "Edit | Copy special | Copy/move".
You've really been working hard. I'm impressed with what you've accomplished

You won't regret getting a later version of BIAB. There have been many changes since 2019. The best deals have always occurred when a new version of the program is released. That's usually at the start of December. I suggest you make a note in your calendar and have a look at the deal on offer at the end of this year.
All the very best with your journey.
--Noel.
P.S. I agree with you. It really is such a privilege being a musician with programs like BIAB. I've been using it since 2006 and every day, I'm still amazed at what it can do.