If the Secretary notifies the Commissioner of a completion discount for a person under section 40, the amount of the completion discount is to be applied as follows:
(a) first, in discharge or reduction of any accumulated AASL debt of the person;
(b) second, in discharge or reduction of:
(i) any AASL debt of the person; or
(ii) if there is more than one such debt, those debts in the order in which they were incurred.