Change lookalike or at least swap everything between 2 characters

[bruhIDFK]

I want to change my lookalike into another character on the island but despite me actually changing that character to “self” and my lookalike to “not related” my lookalike still stayed as my lookalike… I could just rename the lookalike some may say but I want to keep the relationships… I want to keep the wife I have and every other relationship, so if you could at least make it so we can swap all stats between 2 characters that would be great!