I want to connect my existing PNID to my Wii U, but then realised I already have an NNID on Wii U with the same name. Since I don't want to delete the user with the NNID, I figured I would just disconnect my PNID from 3DS and make a new one for use on both 3DS and Wii U (on a different user). However, when I try to delete the PNID from my 3DS through NNID settings, I get the 026-3221 error and can't delete it.