The Third Party Access Act is amended by inserting after section 7 the following:
If the designated Minister under Part IIIA of the Trade Practices Act 1974 of the Commonwealth believes under section 44H(6) of that Act that an amendment to the Access Code made under clause 48 of the Code after the commencement of this section is, or results in, a substantial modification of the Code, then that amendment is to be taken not to be in force, and never to have been in force, to the extent of that belief.