Wife will cancel the Plat card, too late to keep MR alive by getting another card?
My wife’s AMEX Plat AF posted on 6/8. The plan is to cancel before 7/8 to get AF refund. But she just remembered that she has no other MR card and she isn’t ready to transfer the points to any program yet. The plan now is to apply for the Blue Business Plus card to keep the points active. My question is— the the ME programs combine the moment she’s approved and assigned a Business Plus card? Or does she need to receive the card first to activate the MR account? Or worse, does she need MR activity in the Business card first?