With all these rumors about an update (yea, fake I know but it's inevitable) it just hit me that it might be a good idea to backup your genuine ticket. At least for one DS game, so you would be able to reinstall it in the future without connecting to eshop. Maybe Haxchi (or similar hack) should be applied on a clean game in the future. Or maybe you manage to screw something up and want to "start fresh". So, easiest why to dump your own tickets and put it together with the game downloaded from NUSDownloader?