Using Plex Web, https://app.plex.tv/desktop
When viewing the library, click on the three vertical dots in lower right corner and choose Get Info. It will show you the location of both files.
If you’re on the movie pre-play screen, click the three horizontal dots to the right of the Play button and choose Get Info.
Move the undesired version outside the view of Plex’s scanners.
Manually re-scan the library if Plex does not do so automatically. Hover over library name, select three dots to right of library name, select “Scan Library Files.”
This should eliminate the undesired version from Plex.
If all else fails, delete the undesired version from your NAS and Plex Dance the desired version.
