(1) This section applies if:
(a) the Australian Energy Regulator is required to do something (a preparatory step ) before making a decision or making an instrument under the National Energy Retail Law and Regulations (Commonwealth) (the authorising law ); and
(b) the Australian Energy Regulator takes the preparatory step:
(i) on or after the time that the National Energy Retail Law (South Australia) Act 2011 of South Australia was enacted; but
(ii) before the time that the South Australian Energy Retail Legislation first started to apply under this Act as a law of the Commonwealth.
(2) For the purposes of the authorising law, the Australian Energy Regulator is taken to have complied with the requirement to take the preparatory step.