Documentary Series Naming - Flat Folder Structure - Natural World vs BBC Documentaries

[JuiceWSA]

If you want Plex to work - you absolutely want to follow the instructions for naming and structuring your files (to the letter):

https://support.plex.tv/articles/naming-and-organizing-your-tv-show-files/

Considering your MP4/M4V files could contain embedded metadata that WILL throw Plex into a tailspin (unrecoverable) do this to prevent Plex from looking in your MP4/M4V files for metadata:

Video File Naming

With LMA in priority, Embedded Titles within MP4/M4V files are preferred - even over a perfect file name. Local Media Assets should - AT ALL TIMES - remain enabled (unless specifically instructed to turn it off). Local Media Assets should be ‘Demoted’, to the bottom of the stack of active agents under ALL tabs in Shows and Movies, but should NOT be disabled. Local Media Assets is needed for many things - it doesn’t need to be given Tip-Top-Priority (as Plex has so hatefully placed it as it’s …

And a Plex Dance after that for these two shows would be a good idea:

The Plex Dance ™

The purpose of this is to remove all cached metadata and xml data for an item that Plex usually keeps. This helps when you want to “start from scratch” for particular item move all files for the media item out of the directory your Library is looking at, so Plex will not “see” it anymore scan the library library (to detect changes) empty trash clean bundles (in menu next to server name, when accessed under ‘More’) double check naming schema and move files back scan the library Support articl…

Do enable Debug Logging - NOT Verbose before you do any of the above:
Server/Settings/General
…in the event they’ll be called for… by someone that can read them.