FlyerTalk Forums - View Single Post - The Official - GLOBAL UPGRADE CERT success thread - Yay! I got it!
Thread: The Official - GLOBAL UPGRADE CERT success thread - Yay! I got it!
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Old Apr 14, 2017 | 9:42 am
  #2167  
rylan
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The T&C still state:
For travel on KLM-operated, KLM-marketed flights this certificate may be used to upgrade on published fares booked in Y, B, or M class and all fare classes upgrade into Z class.
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