Hello!
I transferred data between 3DS to New 3DS XL back in February,but I lost my save data. It was still on the old SD card, and I found a way transfer the data over for all my games except my Street Pass Plaza titles. My data for the Miis was still there, and I was able to re-download the games. I even still have all of the hats I bought. But I lost the save data for the individual games. Does anybody know where I can find that data or is it just lost? It'd be a shame if it was lost. I don't think I could play the old street pass games again to get the last few tickets remaining.