I posted something similar a bit ago so im rewriting it to make my question more understandable. Sorry if this poses an inconvinience.
I unlinked NNID from Homebrewed Wii U (Aroma and Pretendo used) but on my normal, different wii U, it says that it is still linked to the modded. but when I try to log in again on the modded one it works fine. Is there a safe way to change this and break the NNID away from the modded and put it on an unmodded Wii U??