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ok, I'm going to try to download from the eshop and hope the 3ds saved the backup data for me. thanks!I think your data is safe as long as it is on the same SD Card. I lost my Luigi's Mansion save file when I tried switching SD Cards (I was dumb) and had to restart the game. The 3DS keeps a backup save file saved for most games I believe, as long as you don't delete the save data then you are good.