Once the suit is unlocked, the data is saved to your game save file. You generally do not need to scan that same Amiibo ever again.
However, I can offer helpful alternatives: mario kart 8 deluxe amiibo bin files
If you’ve been looking to unlock the Mii Racing Suits in Mario Kart 8 Deluxe without buying 40+ physical figurines, you’ve inevitably stumbled across the term Once the suit is unlocked, the data is