The Minister's approval for a core State/Territory entity to negotiate an arrangement with a core foreign entity:
(a) comes into force on the day specified in the approval notice given under subsection 18(1); and
(b) if, under subsection 17(4), the Minister revokes the approval decision under subsection 17(2)--ceases to be in force on the day specified in the revocation notice given under subsection 18(2).