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Thread: What class (code) do upgrades to C/F post into?
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Old Nov 7, 2012 | 6:31 pm
  #5  
golfingboy
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Usually M through F for 1Ks, B through F for Plats/Golds/Silvers, and Z through F for general members...

That is based on my experience for advance buy ups... In theory, often buy-ups into Z and P books into an "UP" fare, but those UP fares are considered paid F/C fares for accrual purposes.
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