I did, I just didn't swap SD cards over and the receiving 3DS couldn't find the DSIware files.You followed da guide didnt you
Move DSiWare titles when prompted!
gatewait.
http://en-americas-support.nintendo.com/app/answers/detail/a_id/227/
Remove the SD Card from the source system as it will now be used in the target system.
- If the target system has a higher capacity SD Card than the source system, you may choose to transfer your content to the higher capacity SD Card instead. How to