Sorry, that you have problems, Matt.
For some files we had to relable the names.
The example you mention was an wrong labeling in the first edition,
because the Basic set instruments should have an individual labeling.
Withou the "B" they could have equal names with the SHORT NOTES or other mapping sets, which could be confusing if you load both.
Other changes are the new looped sustains, they do have a "L" labeling in their name.
I wrote an overview how to handle different filenames.
Thought our distributors attached this in the Pro Edition package?
I also mentioned there, that if current projects are in work, it's better to keep the original database for safety.
I tried to label the Pro Edition clear and homogenous, keeping the old labelings wherever it was possible.
During mapping the First Edition I tried to anticipate all Pro Edition add-ons and possible changes in the labeling. Sorry again, that I didn't see all the progressions.
If you need detailed informations or help about labeling, let me know.
best wishes
Herb