Generic "Capture One" session folder is visible in Mac Finder but not in C1 "System Folders"

I'm sure this has been asked before, but a search didn't find it. Thanks to anyone who can help. For years I've kept a session named "Capture One" in my Pictures folder which I just use for Trash when I don't set up it up within a specific image folder. This has always appeared in the Pictures folder shown in my C1 Library Tab. It suddenly disappeared from C1. It is still visible in the Mac Finder and the contents of the Trash folder is the C1 Session Folders>Trash. All my other folders in my Pictures folder show, just not this one specific folder. How can I get it to show again? I tried deleting that folder and creating a new session, but it is still not showing.

Started under C1 16.3.1.23. I just updated to Capture One 16.3.3.6 with no change.

Mac OS Ventura 13.6.2