Need help with a PBR save that is too big/corrupt

[dokudokuro]

I've got a PBR save with all Pokemon that I wanted to use for a post-game playthrough but for some reason PKheX is unable to load it. I'd imagine it can't be the number of Mon since there's other saves online that have a full dex with no issues and it can't be corrupt since it works perfectly fine on both Dolphin AND actual hardware.

I've tried looking at the file in properties and it seems no larger than other saves of the same type, so I'm unsure what exactly the issue is.

Are PAL saves not supported? I haven't read anything to suggest that but every other save I've seen seems to be NTSC-U, if so it'd be a simple matter of importing my dex to another save but this is really annoying me as I want to get some Mon ready for the Little Cup mode ruleset among other things.

Any and all help/information would be greatly appreciated!

PbrSaveData