I decided to make the move up to 3DXL after the new Zelda 3DXL came out. Last night I did the system transfer from my old 3DS, following instructions and even switching SD cards when asked. When the process was over, most things transferred just fine. However, I found that some of my Mii Plaza information didn't transfer over. I still had my Mii and all of the people I've streetpassed before, but the Warrior's Way and Monster Manor data did not transfer. "Oh well, I guess I'm starting over," I thought, and I redownloaded them.
But what's really bugging me is the puzzle pieces didn't transfer over either, except for the first eight panels or so. I was pretty bummed that I'd have to recollect all of the pieces, but I've found that when I streetpass with other people, I'm unable to get puzzle pieces from them. Their Miis won't even follow me into the software. And when somebody streetpasses me, they see that I have all of the pieces I used to have and are even able to receive them. Meanwhile I'm unable to see the pieces I have or obtain any new ones.
Now here's one other twist: When I put the SD card from my old 3DS into my new 3DSXL, all of my old Mii Plaza information returns. All the puzzles are viewable again.
Is it possible for me to just transfer all of that Mii Plaza information over to my new system or SD card? Or at the very least can I unlock the puzzles that I supposedly already have and once again be able to receive puzzle pieces from street passes?