Not sure the answer to the metal question and would like to know myself, but if im not mistaken that would then make it 50XP total? FB has CDG-IST as a medium distance so 10XP for premium or 5XP for economy. Conversely, this booked me into J which in AF should be business no? and thus grant 70XP for the run (15XP for each the CDG-IST-CDG segments)