Here is my question:
I purchased a round trip ticket with points. Let's say the total # of points was 20,000. Is there a way to know what was the # of points for the 1st flight vs. the # of points for the 2nd flight?

Additionally, can I cancel just one of the 2 tickets? I purchased AAA-BBB-AAA, and I want to cancel AAA-BBB only (as I will end up purchasing a ticket CCC-BBB): is that possible without losing BBB-AAA (for which the fare has increased a lot)?