Originally Posted by
fly747first
This isn't correct. If you have a 3-leg itinerary of which 2 are in F, if there is a schedule change and one gets downgraded to J but the other remains in F, AA doesn't have to refund any miles unless none of the legs remain in F.
The issue to which you replied is if an itinerary is eligible for cancellation and full refund without penalty should there be a schedule change such that one flight that was ticketed in first no longer offers first. The discussion was not about the cost in AA miles of a mixed-class itinerary.