I’ve been using Infuse since Infuse 4 and have never had any issues with movie or series covers.
But since Infuse 8, whenever I add batches of movies, Infuse doesn’t apply covers to all of them. When I go to edit a movie’s metadata and choose a cover, it gets applied to other movies as well.
Some films even have covers that have nothing to do with the film.
What I don’t understand is how Infuse manages to display the original name of the downloaded file when it has been renamed and is no longer present on the NAS.
Renaming the file will only change what you see in your file explorer. If you you look at it in media info it’ll show the filename within the mkv. You can see below one of my files - I’ve renamed it but the original is still there.