Elements Organizer 2018 Mac - photos keep linking to time machine snapshot

I've set a folder on my hard drive as the watched folder for my Elements Organizer 2018 (Mac) Catalog - /Users/<username>/Pictures/Library/..

No pictures initially appear in the library so I then "import" from this folder into the library. All of the photos are added.

However - the photos are then linked to "Macintosh HD@snap-793281/Users/<username>/Pictures/Library" rather than "Macintosh HD/Users/<username>/Pictures/Library".

This usually does not impair functionality - except for two scenarios:

1. When I import new photos from a memory card in Organizer to my HD - they immediately are "disconnected" from the photo on the HD.

2. Organizer occasionally pops up an error that my photos in the catalog are disconnected and pops up the dialog to "Reconnect missing files". When I navigate to the file on the "Macintosh HD" it pops up another error that "The file already exists in the catalog". In the dialog it says that "/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/MacBook Pro/2018-03-26-050118/Macintosh HD/Users/<username>/Pictures/Library/1993/photo1.jpg was not connected to /Users/<username>/Pictures/Library/1993/photo1.jpg"

Why is organizer pointing the files to a local time machine snapshot rather than the hard drive itself? I tried Lightroom for a period and had no such issues.