Home Forums US Life 다운그레이드 델타 아멕스 플레티넘 다운그레이드 델타 아멕스 플레티넘 Name * Password * Email upgrading or downgrading your acct at any time you want...it's your plastic money acct. just talk to your card issuer. you still can keep your mileage u earned but not a special promotion they offered. I agree to the terms of service Comment