Sequel of a movie being considered a different version

how did you name them?
should be like this…

Movies
  Scary Movie (2000)
    Scary Movie (2000).ext
  Scary Movie 2 (2001)
    Scary Movie 2 (2001).ext
  Scary Movie 3 (2003)
    Scary Movie 3 (2003).ext
  Scary Movie 4 (2006)
    Scary Movie 4 (2006).ext
  Scary Movie 5 (2013)
    Scary Movie 5 (2013).ext

or (if you don’t use per-movie subfolders):

Movies
  Scary Movie (2000).ext
  Scary Movie 2 (2001).ext
  Scary Movie 3 (2003).ext
  Scary Movie 4 (2006).ext
  Scary Movie 5 (2013).ext

If you had the movie already added to Plex, you might need to perform a “Plex Dance” in order to clear the wrong data from the initial match:

  1. move the files outside the scope of that library
  2. scan the library for updates
  3. empty trash and clear bundles
  4. fix the file names and return them to their target folders
  5. scan the library for updates again