I've looked around for an explanation on this, but as of yet, I haven't found one. Hopefully someone on these forums knows the process for this.
Basically, I'm planning on getting a Wii U soon. However, the problem is that I've already created a NNID on my 3DS, and the Wii U requires me to use one as well. There is indeed a process in order to link the Wii U NNID to the 3DS, but as far as I can tell, there's no way to do the reverse. Is there any way for me, with the 3DS ID I have right now, to transfer it over to the Wii U I plan on getting, or would I have to create an entirely new NNID?