thetvdb.com is never going to fix their database, they have some sort of ideological purity thing going on.
Many cartoons that do the “two episodes in a half hour block” thing provide those files (both on bluray, and places like iTunes) in order AB, but thetvdb.com insists that these are actually BA.
The only way of fixing them (short of creating my own internet database for tv shows, replicating all their work, and then fixing their screwups) is to manually switch the data. Copy all of it in notepad for episode A, copy all for B, then manually put in the title/description/whatever. And hope that the orange locks preserves it if you ever rescan.
This is tedious. And it looks like Amazing World of Gumball is doing this 10 times per season for all seasons. To the point where I don’t even want to buy it… more hassle than it could ever be worth (but I’ve also seen it in Daniel Tiger, Baby Looney Tunes, and a dozen others made by various/different producers). It’s unlikely that thetvdb’s argument is even correct at the philosophical level.
If I could have a button that just let me swap the metadata for two shows within the same episode, I could spam click all 10 files in just a minute or two, and it’d even switch the screengrabs (exporting and re-importing those is too much of a hassle).
Dearest Plex Inc, could you please fix what they refuse to fix?