1. Let Radarr, Sonarr, download clients, Tdarr, and any other file processors finish their work.
2. Run a Plex scan for the specific libraries or folders that changed.
3. Confirm Plex now shows the expected file versions, paths, sizes, codecs, and subtitle sidecars.
4. Run the Media Files or Subtitle Files scan in Deduplarr.
5. Review keep preferences, suggested keepers, and file paths before deleting.
6. Use bulk delete only after the scan reflects the current Plex state.

• Plex is set to scan periodically, such as once per day, and Deduplarr runs before that scan happens.
• Automatic Plex change detection is disabled or unreliable on network, remote, or FUSE-style mounts.
• An upgrade replaced a file in place, but Plex has not re-read the changed file metadata yet.
• Tdarr or another processor changed the file after Plex first detected it.
• External subtitle files were added, removed, or renamed after Plex last scanned the folder.

• Media deletion removes whole Plex media versions, not individual tracks inside a file.
• Subtitle cleanup targets external sidecar subtitle files only.
• Embedded and burned-in subtitles are ignored because Plex cannot delete them as standalone sidecars.
• Plex must have delete permission and filesystem write access to the target path.
• If a delete fails, check the sampled failure detail and the Deduplarr server log before retrying in bulk.

Schedule Deduplarr after Plex and post-processing jobs normally finish. If Plex scans at 3:00 AM and Tdarr often runs afterward, give Deduplarr a buffer instead of scheduling it at the same time.

• Media and subtitle schedules are separate.
• Scheduled scans use the server container's local time.
• Monthly schedules on days beyond the current month run on that month's last day.
• Scheduled Deduplarr scans do not force Plex to scan first.