That is the version of Plex Web.
Look in Settings → Server_Name → General. It will be 1.29.something, 1.32.something, etc.
Full name including directory path, which folder is added to the library, and file extension (mkv/mp4/etc).
If you still have the 3D version on your system, include its information as well.
You can also try using Editions to separate the two listings.
Plex Dance both movies after renaming/reorganizing. Simply renaming is not enough.
Move them back to the movie library one at a time. Wait for Plex to finish recognizing one before adding the other.
/movies <-- folder added to movie library
.../TRON Legacy (2010) {edition-3D} <-- must use curly quotes for edition.
....../TRON Legacy (2010) {edition-3D}.ext <-- ext = mkv/mp4/etc
.../TRON Legacy (2010)
....../TRON Legacy (2010).ext
