A user "Marketing Services" (firstname.lastname@example.org) was added to a list permission about 4 weeks ago. The department decided to change the name to "Marketing Support" and AD was updated (3 weeks ago). Now I go back to the same list and delete the "Marketing Services" and do a user search for "marketing" or email@example.com and it still showing the old name "Marketing Services" and "Marketing Support" does not show up in the list. By the way, this account is never imported into user profile db.
How to fix this issue?