I have found that IF you have both the Plex Movie agent and Local Media Assets (Movies) enabled that you can get some unexpected behaviors with movie titles or your extras depending on which one is first priority.
My initial setup:
- QNAP TS-451+
- No extras in Library
- Local Media Assets Agent turned off (this was done because it was hanging onto the name of the Movie from the file's meta data instead of using the metadata from IMDB).
What Occurred:
When I started playing with extras (with proper folder structure and naming conventions), PMS would create a new movie record based on the name of that file that was added to the sub directory within the movie's folder
What I Did to Fix:
Clicking on the ellipsis for the Library in PMS Web allows me to Scan Library Files. This usually takes care of the issue.
Alternate Option Occurrence:
I tried flipping the Local Media Assets agent in front of the Plex Movie agent Doing this seems to resolve issues with files being added accidentally to the main library. However, I don't like this as movies revert to metadata on the file for name rather than what is pulled from IMDB.