Thank you very much.
I have rarely thought about the catalog folder, always using one catalog and collection only. Looking at it I find it seems hopelessly bloated so I think I will let One Drive finish its file check, then use LrC to clear out the old catalogs and slim down the folder before moving it. Thanks for the advice.
Library Path: C:\Users\ajroy\OneDrive\Pictures\Lightroom\Lightroom Catalog-2-2-DESKTOP-94CC2MV-v13-3.lrcat
Actually, while you do have a copy of the catalog on OneDrive, and that library path indicates that. I do not think you are actually working from the copy on OneDrive, but from a copy on your C drive in your Users Folder. The presence of the word OneDrive in that library path indicates (I think) that the contents of that folder (in effect c:\Users\ajroy\Pictures\Lightroom\Lightroom Catalog-2-2-DESKTOP-94CC2MV-v13-3.lrcat) are being automatically synced to OneDrive.
Both actually working from a catalog on OneDrive, and working from a catalog on your hard drive but auto-synced to OneDrive are bad. LrC does not support working off the cloud, or a NAS, or any network share. As for an automatic sync to OneDrive, that is highly problematic.
If you automatically sync a LrC catalog to OneDrive, then every single edit you accomplish, every single mod, results in a communication across the Internet to your OneDrive. This gets very very busy. If you are having a bad Internet day, things can go downhill, in theory (I cannot prove), a catalog corruption can occur. At the very least LrC can slow down.
I would advise that you eventually create a folder on one of your hard drives, likely a root folder, with a name you like that is not associated with OneDrive, System folders and user system libraries (such as Users, Documents, Desktop, Music, Pictures, Videos). A name like MyPhotos, Lightroom, Rumpelstiltskin, GrumpOldFart (anything but Music, Pictures, Videos, and NOT under Users) and move your catalog to that location.
You could always backup to OneDrive, just try not to do that while trying to edit in LrC.
P.S. backing LrC catalogs and/or photos to OneDrive may or may not be efficient depending on how large a space you have at Microsoft.