Searched and couldn't find it. I am flying from EU to the US and connecting to another US city. Think: FRA-EWR-CLT (not the trip, but you get the idea). I want to use a GPU - what happens if it clears the EWR-CLT route while not clearing the FRA-EWR route? Do I lose the GPU? Is there any way I can have them apply the GPU to the FRA - EWR route only?

Thanks all...