Metadata.provider.plex.tv vs local server TV Season GUIDs

I’ve been looking at the guids provided when querying my local server vs the metadata.provider.plex.tv server, and have encountered a discrepancy for TV show seasons. The shows seasons have different guid’s depending on the source, and the version provided by metadata.provider.plex.tv, then give 404 errors when querying a season’s children. However if you take the guid/key from the local server and use it for metadata.provider.plex.tv, it will provide the matching Season guid data and the children pages also work.

e.g. Silo show
Show https://metadata.provider.plex.tv/library/metadata/61b180686bfb4feb48515e07?X-Plex-Token={TOKEN}
Show children https://metadata.provider.plex.tv/library/metadata/61b180686bfb4feb48515e07/children?X-Plex-Token={TOKEN}
Season 1 https://metadata.provider.plex.tv/library/metadata/61b180696bfb4feb48515e21?X-Plex-Token={TOKEN}
Season 1 children - 404 error https://metadata.provider.plex.tv/library/metadata/61b180696bfb4feb48515e21/children?X-Plex-Token={TOKEN}

Local server
http s://IP:PORT/library/metadata/{RATING-KEY}?X-Plex-Token={TOKEN}
gives guid=“plex://show/61b180686bfb4feb48515e07”
http s://IP:PORT/library/metadata/{RATING-KEY}/children?X-Plex-Token={TOKEN}
gives season 1 guid=“plex://season/61b180686bfb4feb48515e17” which is different from that given from Plex.

And if I use the guid given by my local server, and query the Plex server https://metadata.provider.plex.tv/library/metadata/61b180686bfb4feb48515e17?X-Plex-Token={TOKEN} or its children endpoint it then provides the expected result.

If I’m mistaken in my understanding of how this should function then I apologise and would be grateful for any explanation.

The Movie Database (Aired) episode ordering: plex://season/61b180686bfb4feb48515e17
TheTVDB (Aired) episode ordering: plex://season/61b180696bfb4feb48515e2b

I think plex://season/61b180696bfb4feb48515e21 is the “default” ordering, which in this case is identical to The Movie Database (Aired). Don’t know why they have both.

61b180696bfb4feb48515e21/children works fine for me. No 404 error.