Switzcheez

Hello, first time poster here, I hope this is the right topic for this I recently returned from a trip to Japan, I picked up many Pokemon games to shiny hunt with, including 1 of each 3ds games. While checking the legality of the saves/shinies on all them, I noticed this Jirachi was the only outlier amongst this save file, its only the friendship that’s throwing it off, yet Jirachi has a base friendship stat of 100. Anyone know a solution to this?