I thought the new rules don't allow teams to count back now?
Backcounting is allowed, although I'm not sure exactly how it is done with respect to the 85. The new rules are forward looking, not backward looking. Before you could sign whatever number you wanted as long as no more than 25 (assuming you could handle 25) entered in the fall. This meant that you could wait to finalize things like greyshirts. If you signed 26 and someone failed to qualify, the 26th guy could get a ship.
Since you can't sign more than 25 (excluding backcounters), you have to make that decision on signing day. So if you have 26 guys (25 + 1 greyshirt), that decision is final even if one of your 25 fail to qualify.