Call Gold Passport and ask for the diamond challenge. Be prepared to fax/email a copy of your elite cards from other chains promptly. Your best bet is to ask the agent for their email and send it to them while you are still on the phone. If you are lucky enough to get a good agent you may be able to set up the diamond challenge. Keep in mind that it usually takes at least a few days to get this rolling so don't be too disappointed if it doesn't happen for you this fast. Also, keep in mind that it takes (I believe) 12 nights within 60 calendar days to retain the diamond status.