I recently lost my 3DS's SD card and I can't seem to find it anywhere. I know that it is possible to redownload my titles (btw I only have a few) for free from the Nintendo eShop onto a brand new SD card. This means that I will have to start new save files for each game.
My question is will the save files on the lost SD card still work if I found it after starting new ones on a different SD card? Or does redownloading onto another SD card make the old save data unusable?