This evening, I tried to transfer my data from my 2GB SD card to the new 4GB one that came with my new 3DS XL. I recently switched from a regular 3DS.
When I initiated the transfer, I was told that there were duplicate folder names. (Maybe file names too?) 91 of them! It wanted to overwrite them and whatnot, so I cancelled the transfer. What on earth do I do? I want to download some games from the eShop (Phoenix Wright!) but 2GB is just too small.