Can I move Zelda Breath of the Wild data to a new Wii U?
Solution 1:
Sadly it is not possible to move saved data from one Wii U console to another one there are several articles on this on Nintendo's support site. All detail the same answer. This particular one breaks it down in a pretty simple way.
https://en-americas-support.nintendo.com/app/social/questions/detail/qid/47117/~/any-possible-way-of-moving%2Ftransferring-wii-u-save-files-to-another-system