Using the new Plex Movie agent, and normal movies are matching fine- however special edition movies are only half matching (no summary or poster, yet has imdb rating, genre, cast, reviews, extras)
I tend to stick with what is in the Plex support articles when giving advice to people in the forums only for the sake of if you follow what Plex says and it does not work it is harder for Plex to blame your naming convention. As I know you have been around the forums long enough, you have seen people using naming convention that did not adhere to Plex’s and worked for quite a while then either randomly stopped working or stopped with an update.
That said, I just copied OPs naming format from the movie folder and the movie file and put it on my test server. When I scanned, Plex found the movie and all the metadata and also properly applied the correct edition tag. This was all on the initial scan without having to do a refresh metadata like the OP appears to have to do.
The OP mentioned they are using the new Plex Movie agent, but your question about the scanner is valid. Not sure if the OP upgraded to the new agent automatically or manually, but if I recall, I do think I saw posts where the upgrade did not go proper and the scanner did not get set. There was also the manual method which required setting the scanner manually, so again, good question on your part.
Possibly something in the logs would indicate why it is not pulling all the metadata on the initial scan.
Just out of curiosity, what do you see when you go to the edit library dialog then advanced settings for scanner?
You might need to provide logs after adding a new movie that has an edition tag to see if there is anything in there to point towards what is happening on your system.
Like I mentioned, I created a test file for Star Trek and used your exact naming and it pulled the metadata without issue.
Directory: Star Trek The Motion Picture (1979) [tmdb-152]
File: Star Trek The Motion Picture (1979) {tmdb-152} {edition-Directors Edition} [WEBDL-2160p][HDR10Plus][EAC3 Atmos 5.1][HEVC].mkv
If running v1.32.8, then restart Plex Media Server. The scanner/agent does not always initialize correctly. The workaround is to restart PMS. The reports I’ve seen say the bug affects all files, not just those using edition support, but it won’t hurt anything to restart PMS.
The bug is fixed in 1.40, currently in beta. Read the release notes before installing, as there are some database changes in 1.40.
If using TMDB/IMDB IDs, they must be in curly braces to be recognized. Also, all the misc info at the end of the file should be in one square bracket, not several.
Plex Dance the movie after any renaming/reorganizing… The process clears out old / incorrect matching information from the Plex database.
FWIW, this works on my systems:
In Movies library:
/Star Trek The Motion Picture (1979)
../Star Trek The Motion Picture (1979) {edition-Director's Cut}.mkv
../Star Trek The Motion Picture (1979) {edition-Theatrical}.mkv