I keep searching EF for flights with available Business upgrades (C). EF will show, say, 7 C available, but AA will not confirm these upgrades and only put me on the wait list. This is months in advance. What does C 7 actually mean on EF? Am I misunderstanding the information EF is providing? I want to confirm Systemwide Upgrades in June before booking but I can't find any international C upgrades available on AA.