FlyerTalk Forums - View Single Post - changing flights with gold upgrade certificate already applied
Old Jan 8, 2016 | 2:32 pm
  #4  
missamo80
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From https://www.alaskaair.com/content/mi...upgrades.aspx:

If a flight upgraded with an MVP® Gold Guest Upgrade is changed or canceled, the upgrade is forfeited. A replacement Guest Upgrade code can be requested through Customer Care only by the MVP® Gold to whom it was originally issued.
Neil
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