With last night's update, there's now a tool that let's you move saves from physical retail games to their downloadable versions. So if you got Mario Kart 7 at retail and bought the digital version of Mario Kart 7, you can move your physical save of MK7 to your digital copy of MK7.
HOWEVER, once you digitize your physical save, it's stuck as a digital save forever. You can't move your digital save back to your retail copy. FAIL.
EDIT - http://www.gonintend...story&id=198972
3DS eShop now has a "Repair Software" option in that if your game/app is cutting up on 3DS after you just downloaded it, you can go to the respective eShop page for the game/app, go to "More Details", and tap on that "Repair Software" button on the bottom of the page.
So now you don't have to delete and redownload the game/app unless the "Repair Software" option fails to fix your problem game/app.
Edited by Ngamer01, 26 March 2013 - 11:16 AM.