Deyvern

I'm running into an issue when trying to create a Mespirit for BDSP. When I change the OT Trainer information to mine, it becomes illegal and says "Encounter Type PID Mismatch", whether it is shiny or not, it doesn't seem to allow me to make Mespirit files with my information, only the default one from the encounter database.

Legendary Pokemon are showing as illegal unless they have their hidden ability in most recent version of PkHeX EDIT: I realize this is not a mistake and I am just stupid.