Hi Guys,
I recently received a Wii U and I made a new account on it with a new NNID. So now I have two seperate ID's on my 3DS and Wii U. I want to have the same NNID on both of my systems, so I would like to delete the old account on my 3DS. Now I dont want to delete the NNID, I just dont want my old NNID registered with my 3DS so that I can register the Wii U NNID(my new NNID) I made on my 3DS. How will I do this and if I do it what will be lost from my 3DS. Just to be clear I want to keep my old NNID, I just dont want to have it registered with my 3DS anymore. 
Thanks for the help guys.
Sincerely,
Ojus Mishra