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If someone is an AU on an AMEX account and he wants to apply for that same type of card in his own name (ie, has BCE, wants to apply for BCE) does the AU card have to be closed first, or will AMEX allow someone to have the same card twice-- one as an AU and the other as a regular account? (Does that make sense?)
The AU can get his own card and keep the AU card as well.
If they were joint on the first card then No.