The references in sections 8(1) and (7) of the Enforcement of Court Orders Act 1940 (as amended by section 29 of the Family Law (Maintenance of Spouses and Children) Act 1976, section 22 of the Family Law Act 1995 and section 30 of the Family Law (Divorce) Act 1996) to an order shall be construed as including references to an antecedent order.