Three questions. 1. Can I backup a game & save file, rename to 3DZ, keep my save file AND play online? Then can I import the save file into the cartridge to update the save file on the retail cart without renaming to 3DS again? 2. To backup the save from the Animal Crossing rom file using the card2 tool, do I have to first rename the file from 3dz, to 3DS? Will I immediately lose the save as soon as I rename it, or does the save get written to the rom once you load it? 3. I heard that you can lose saves if you rename to .3DZ, what if I renamed it back to .3DS, will that recover the save?