I had Radarr, Sonarr, and deluge running. Deluge was only seeding and I un-monitor any titles that have completed series or I’m satisfied with the quality but those too were deleted. Anything to that has to do with deletion I unchecked in the arr’s and plex. And even if I had something still monitored for upgrade, it wouldn’t get deleted until the replacement finished downloading then imported.
In UFS Explorer, I see the data that wasn’t deleted so I’m running a scan right now.
You’re right though, files don’t just disappear and something deleted those files. I just don’t know what caused it. Since my server is new and I’m only interested in having this as a media server, I don’t have much installed or running.
Bubuntex/Nordpvn, binhex-deluge, hotio-jackett/Radarr/Sonarr, Rebuild-DNDC and plex are the only things that were running at the time.