So when I made this Magearna in PKHeX (7) it gave me the error "Invalid: Can't Hyper Train a perfect IV" and I have no idea what it means/why I got it.
801 - Magearna - 49F4E4C34323.pk7
So I transferred *saves* from Citra to Checkpoint, so that I could restore it to the original cartridge. However, I couldn't help but notice the "extdata" folder which I have 0 knowledge about. Could anybody explain what this folder does/if its important?