The bulk update request #9783 is pending approval.

mass update sweetapple_(mxxnkiddo) -> sweetapple_(nu_m00n)
mass update karma_(mxxnkiddo) -> karma_(nu_m00n)
create alias sweetapple_(mxxnkiddo) (38) -> sweetapple_(nu_m00n) (0)
create alias karma_(mxxnkiddo) (16) -> karma_(nu_m00n) (0)
change category sweetapple_(nu_m00n) (0) -> character
change category karma_(nu_m00n) (0) -> character

Reason: artist name changed. characters should match. see alias #65239

You don't need to change the tag category as it's already a character tag (and you can manually change them if they weren't)
You also don't need to mass update the tags; aliases handle that already