I have a case here of an IP (184.108.40.206) that mainly edits on en.wikivoyage that has expressed a desire to have their edits transferred to their SUL account (Dreamboat1234). The main reason that the user continued using their IP address on that site is because they have >1000 edits and are well-known there, and hence it would be nice if they could transfer those edits to their SUL account.
Note that merging would not be needed, because the SUL account does not have en.wikivoyage attached to it. There is very strong evidence that the IP and the SUL account are the same person, and this can be confirmed through various means such as CU.
I haven't seen a precedent like this before, and hence was not sure if this can be done.
TLDR; an IP user wants to "rename" their en.wikivoyage account to their SUL.