Léon: The Professional (1994) Not indexing

With all these changes you probably need to do the plex dance: @JuiceWSA said:

The Plex Dance®:

  1. remove show/movie from library
  2. rescan library files
  3. empty trash
  4. clean bundles
    https://support.plex.tv/hc/en-us/articles/200392106-Library-Actions <— scan library files, empty trash, clean bundles
  5. bring names and structures into compliance/Move LMA/etc
  6. replace corrected show/movie into library
  7. rescan library files

All Steps. In Order. No Shortcuts.

This should clear out any metadata and settings interfering with your changes. Simply changing a file name will seldom correct a PLEX matching problem