I want to create an AppleScript for Apple's Address Book (Contacts) app that will look at two Groups, and if a contact is in one Group, it will remove it from the other Group.
Specifically, I add potential clients to my Address Book so I can color-code their messages in Mail.app. They are added to a "Work - Pending" group. Once the project goes forward, I add them to a "Work - Current" group. The AppleScript would compare the two, look for duplicates and remove them from the 'Pending' group.