a few things that Sage left out:
1. wksetup folder - some of those files are specific to standard/Advanced, so I copied all of the files over from my backup Advanced folder - I don't think the folders matter.
2. After dumping the MAS_System folder back over the top from my Standard backup I couldn't open Advanced because the reg info was bad. So I copied the SY_System file back in from my Advanced backup.
Anyway, the entire process was a pain and I'm wondering what other issues we'll run into. The best solution might be to backup everything up, uninstall Standard, reinstall Advanced, updates, enhancements, etc. - and then run a migration from the Standard backup to Advanced.