I've had 8 AA flights, not credit for the same reason. When booking with AA, it asks for First, Middle and Last name in 3 separate boxes. I completed all 3. When issuing the ticket, it only displays First and Last name as Middle is not a requirement for AA or the US. Now Cathay are rejecting all my claims.

I am now inserting my middle name along side my First name in Box 1 in the new bookings I am making, lets see if that makes a difference.