Old content being "recently added"

[FordGuy61]

Long thread that seems similar to your problem.

Plex Files Unavailable but they’re not missing

Server Version#: 1.41.0.8992-8463ad060 Having a very unusual situation that I hope someone can shed light on. Updated to MacOS 15. I know. I know. Wait. But I ran a test on another machine to make sure everything worked. And it did. So I updated my main Plex Mac. For a few hours all was fine. Then… On my TV Shows library (which is on two Synology NAS devices) it sporadically stopped updating new files and said some files were unavailable but I could still play them. And when I clicked to see…