My legitimately caught Ursaluna doesn't pass the legitimacy check in PKHex

[properbandit]

This is my actual Ursaluna that I caught in PLA as an Ursaring and grinded missions to find a Peat Block for, to wait until an in game full moon before evolving, transferring to Pokemon Scarlet and Violet. Unfortunately it's too fast for the Trick Room team I'm going to use it on, so I traded it to a sys bot to be able to download it's pk file and modify the IVs. However, as soon as I load the file in, it immediately rejects it for the following reason

Obviously this isn't right, all of this is the data for a legitimate Pokemon because well, it IS a legitimate Pokemon. So what's the issue?

[theSLAYER]

HOME compatibility with SV is a recent thing. And cross game stuff, and cross game evo stuff, are all still being worked on. Preliminary support from PKHeX is out, but not complete.

Please contribute your Ursaluna here, thanks: