I have an odd situation. I had an int'l business mileage flight that had a JFK-FLL leg in Coach because there was no availability.

JFK-MIA opened up in first and I called the agent to change the segment to that. She made a mistake an re-isused the ticket in first on the JFK-FLL (which was not available at the low level).

Shows up on the receipt as RD (which makes sense because it is a "medium" availability), but the mileage is still 120K - low.

Fare codes also show 60K each segment. Agent insists it is fine