User blog comment:TheV360/== oh no ==/@comment-10305509-20140601234008/@comment-11078542-20140602192115

I honestly doubt Nintendo will be able to help you with this.

If you still have the game copied to your dsi's memory card and buy the game again (and replace the new instance of the game with the one in your memory card) you will be able to access the files again and send them via wireless to your petit computer in your 2DS.