After every Mediascan the scanner matches both into:
The result is a duplicate every time the scanner runs. I did split both, I tried to remap within the Plex App, I tried to rename them on disk - nothing helps. After a scan everythings wrong again.
Might know what is happening here. This movie Ride (2018) - IMDb does not appear to have an entry on tmdb (at least upon a quick look I could not find it).
As plex uses a consolidated metadata approach I think enteries need to exist on tmdb and imdb for matching to work regardless of the id being used to match.
I’d suggest you create an entry on tmdb for this movie. Once created make sure to include the external id linking it from tmdb to imdb. Finally, wait 48/72 hours for plex to pickup the change and have it replicated into their back-end.
Scratch all that. Just searched for imdb-tt6237268 and imdb-tt6237268 and both movies were found correctly. What @Divideby0 says below on the folders is most likely the issue. Good luck.