Admin and Moderator are a status, and have never had anything to do with titles. When you remove a moderator and then put them back, it has never touched the title field, only the U_Status (in old versions) and USER_MEMBERSHIP_LEVEL in the new. If your admins and moderators had Administrator/Moderator listed as a title, then someone had to manually assign that as a title to them, it's never been that way in the stock code.
