Has anyone has had a situation, while booking LH award ticket, that individual segments have C or F award availability, but not if the whole itinerary is searched? For example, in my case, I can see (on UA, ExpertFlyer and ANA) that F award on 3rd Sep is available individually for segments LH DEL-FRA and FRA-BOS, but when I put it DEL-FRA-BOS together nothing can be seen. This has prevented me to book the ticket that I want...Thank you!