I have version 3.4E and have been playing on Animal Crossing: Let's Go To The City for a couple of months now, so do not want to risk losing my town.

However, I really want to mess around and try out some stuff using ACToolkit then eventually go back to my original save. Is this possible?

I've got Gamesave Installer and Gamesave Extractor and have extracted the .dat file of my orginal save, but if I modify this and install it back to the Wii, will it get deleted because I have version 3.4?

To make sure I've safely backed up my entire original save do I need to extract the file as a .bin? If so, how do I go about doing this?