Exporting a save from an original game cart?

Here's a question I would like answered. How would I go about exporting an NDS save from its original game cart? Would it work the same way as ripping the ROM image itself? And, I am also curious to find out how it re-imported to its original game cart? (The game in question is Animal Crossing.)

Can this remove Resetti? I'm getting extremely tired of seeing him everytime my DS Lite freezes because of a broken hinge. And I don't want to restart my town.