I have run into this problem a few times. It occurs with shows that are a short series and aren't going to have seasons. Most of the time when I've downloaded them they are named Episode 1 xxx or E01 xxxxx, etc. An example of this is the show BBC Life. I have a version of this. I have put it in a Folder named Life and within this it is in a Folder named Life S01. Each episode is named Exx. When this is scanned by Plex it labels it Season 3 and then can't find any episode information as there is no S03 for this show. Some might say to just rename it, but if I do then I can no longer seed it. It would be much easier if Plex could support this common naming format
Folder structure
TV Shows/Life/Life S01/Exx
I'd like Plex to recognize files named this way and not need the Sxx in the name preceding the Exx. It should see that it is in folder S01 and then know that every file that has Exx in the title is an episode of that season.