However, the urban agglomeration council may, with the prior consent of any reconstituted municipalities, pass a by-law stipulating(1) that all or part of the urban agglomeration expenditures are to be apportioned on the basis of another criterion, including any change to an element of the criterion set out in the first paragraph; and
(2) that a related municipality is not required to contribute to the payment of a part of those expenditures.