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Thread: CX AA-codeshare tickets: how does upgrade work?
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Old Nov 24, 2015 | 5:14 am
  #4  
Rivarix
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No. You cannot use your AA miles to upgrade on CX. AA miles can only be used for one-class upgrade on flights marketed and/or operated by AA, BA and IB. So on BA it's Y to Y+.
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