Global fix for fragmented albums?

The files in my library are properly organized into artist and album folders (most were originally imported in iTunes OS X Music for Mac). I can see the albums in Finder, but in Roon they appear in little pieces, each with just just a few tracks.

Do I have to go through more than 100,000 files and manually “merge” the pieces back into complete albums? I’ve tried having Roon re-scan my library, but that doesn’t seem to do the trick.

Any tips?

Get an app to look at the metadata, which sounds like it’s incorrect. Songkong works well with roon.