Yes, you’ll see in my post that I said it locks to the scheduled DH time. I guess I should have clarified the original schedule, not any delayed “scheduled” departure time. So, for the OP assuming his DH was built and scheduled to block in at 2331 or later then he gets carve pay even if he DDH. If it was scheduled in at 2315 but shows delayed till 2345 he will not get carve as the DDH will lock back to the original schedule/pay. As others have said this is an impasse disagreement between the company and ALPA. I myself have a case lost in the abyss waiting for some resolution to this dispute.