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Old Jul 11, 2018, 7:36 am
  #193  
MarkOK
 
Join Date: Aug 2017
Location: Stilllwater OK (SWO)
Programs: AAdvantage ExecPlat, World of Hyatt Globalist, plain "member" of Marriott, IHG, enterprise, etc.
Posts: 1,837
Does anyone know for sure if they can/can't use the old card after a straight up 'product switch'? I am thinking since the account number doesn't change, the old card should work until the new card is activated.

I made a reservation a couple days ago with my old card post-product-switch on Hyatt.com, no problem -- later today I will give to them on check-in for the 'authorization hold'. I'll report if my assumption is wrong.
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