For Plex use, only what is listed on TheTVDB.com and TheMovieDB.org is relevant.
Take your pick which one of these is reflecting your particular file numbers better.
On both platforms, there is no such thing as multiple seasons per year.
(TheTVDB appears to be more complete: https://www.thetvdb.com/series/four-corners-1961 )
Then adapt the naming of the files and put them into the required folder structure.
Software like Filebot is a big help with this task.
