Definitely do that. It means you can just that tgat 16gb micro SD card and put it in the new3DS after the transferI'm sure its been asked and answered many times before but I'll ask in hope that someone will be kind enough to answer.
My N3DSXL is coming in on Monday. I currently have a 3DSXL with the stock 4GB SD card. I've purchased a 16GB MicroSD in preperation for the N3DSXL. Can I, or should I copy the contents from my current 3DSXL SD card to the new MicroSD card and use the MicroSD (with adapter) in my current 3DSXL? If so, what are those steps? I dont want to lose any data and hopefully speed up the process when I do a transfer to the N3DSXL
Take out your SD card and copy the contents to your computer. You need a computer with an SD card reader. Once that's done put your new 16gb micro SD into your computer and copy those files to that card. When you're done put it into your current 3DS. When you finally get your new3DS initiate the system transfer. When it's done put the 16gb micro SD card into the new3DS