Well assuming you have cfw on the old 3DS, download a save manager, then backup your saves, make sure you have FBI and a CIA file of the save manager it makes it easy to do things, ok, on the new 3DS get a9lh and cfw (if you haven't already) then download the same save manager, and then on your computer insert the old 3DS sd card and look for a folder called something like "save games" this is where you will copy all contents from that folder, usually a .dat file to the desktop, then copy the saves onto the new 3DS sd card, now assuming you have the game on a digital download save data managers will ask you the target title and then you will need to skid the save in the directory, however some will ask for the target title and pick the directory for you. Inject the save for each game. Now before you play these saves you need to make sure they don't have a secure value. So get save data filer then look for your title id folder then delete the secure value for each game, this will allow you to play the game with that save. Now once you've done all of that you can play
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