Option 1: Add IMDB (or TMDB) ID to folder & file name
Add the IMDB ID to the folder & file name for each movie. See the document @nx6 linked for details. Plex will use the ID instead of the folder/file name when matching the movies.
Then Plex Dance both movies, returning them to the library one at a time.
Note: You must be using the Plex Movie scanner and agent. The other scanners & agents will not pick up the IMDB/TMDB ID from the folder/file name.
Option 2: Split Apart / Fix Match
You should also be able to choose Split Apart then Fix Match. When performing Fix Match, if the listed movies are incorrect, choose Search Options. Use the IMDB ID as the title and leave the year blank. That should give you the correct match.
