(1) An arrangement in force under section 21 of the Post and Telegraph Act 1901 - 1974 immediately before the commencing day has effect according to its tenor on and after that day as if it had been made by the Australian Postal Commission under section 15 of the Postal Services Act 1975 .
(2) In the application of an arrangement referred to in subsection ( 1) on and after the commencing day, references in the arrangement to the Postmaster - General shall be read as references to the Australian Postal Commission.
(3) Where an arrangement in force under section 21 of the Post and Telegraph Act 1901 - 1974 immediately before the commencing day applied to a postal article to which section 5 of this Act applies, the postage payable in respect of the article in accordance with the arrangement is payable to the Australian Postal Commission.
(4) An arrangement in force under section 6A of the Post and Telegraph Rates Act 1902 - 1974 immediately before the commencing day has effect according to its tenor on and after that day as if it had been made by the Australian Postal Commission under the Postal Services Act 1975 .