He was flying DTW ORD LAX on Sunday. Yes, you can check in 24 hours in advance on Saturday. He would appear on the DTW priority list for sunday as a D1 and you could view this list on saturday. However, he WOULD NOT appear on sunday's ORDLAX list as a D1T on SATURDAY until he was CLEARED ON SUNDAY. He was on that list as a D1T on saturday already. I know it's a bit confusing to explain but do you get it now?
So there is no advantage gained by this "gamming the system"? Maybe this is nothing more than a program change to make soemthing that is already happening more automatic?