I did find a solution. Apparently Groove is using the zune database for the music collection. It is located in the following directory:
%USERPROFILE%\AppData\Local\Packages\Microsoft.ZuneMusic_8wekyb3d8bbwe\LocalState\Database
There should be a directory there that contains the database:
EntClientDb.edb
Make sure you have exited out of Grove music. Rename the directory that contains EntClientDb.edb and append .save to the name just to be safe. My directory was a bunch of numbers.
Relaunch Grove and it will rebuild the catalog just like it would do with the Zune software. It took over a hour to catalog all my music but it is now there. There must have been some type of corruption in the db from all the early releases.