Sections 46, 46A, 47A, 47C and 48 of the Crimes Act 1914 have effect as if:
(a) arrest under section 31 of this Act were arrest in respect of an offence against a law of the Commonwealth; and
(b) custody while in Australia in accordance with a direction under paragraph 29(1)(d) of this Act were custody in respect of an offence against a law of the Commonwealth.