(1) A form of warrant duly completed under subsection 69EHB(6) is authority for the same powers as are authorised by the warrant signed by the magistrate under subsection 69EHB(4).
(2) In any proceedings, a court is to assume (unless the contrary is proved) that an exercise of power was not authorised by a warrant under section 69EHB if:
(a) it is material, in those proceedings, for the court to be satisfied that the exercise of power was authorised by that section; and
(b) the warrant signed by the inspector authorising the exercise of the power is not produced in evidence.