FlyerTalk Forums - View Single Post - OWE extra baggage allowance while crediting the flight to QF?
Old Mar 9, 2016 | 9:35 pm
  #4  
Dave Noble
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I would suspect that without the BA number in the booking at check in time, the system will be promting for payment for the 3rd bag

Once checked in, there is no risk that someone will come round to collect payment for the bag if you change the FF number
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