A quashing order may include provision—
Provision included in a quashing order under subsection (1) may be made subject to conditions.
If a quashing order includes provision under subsection (1)(a), the impugned act is (subject to any conditions under subsection (2)) upheld until the quashing takes effect.
If a quashing order includes provision under subsection (1)(b), the impugned act is (subject to any conditions under subsection (2)) upheld in any respect in which the provision under subsection (1)(b) prevents it from being quashed.
Where (and to the extent that) an impugned act is upheld by virtue of subsection (3) or (4), it is to be treated for all purposes as if its validity and force were, and always had been, unimpaired by the relevant defect.
Provision under subsection (1)(a) does not limit any retrospective effect of a quashing order once the quashing takes effect (including in relation to the period between the making of the order and the taking effect of the quashing); and subsections (3) and (5) are to be read accordingly.
Section 29(2) does not prevent the court from varying a date specified under subsection (1)(a).
In deciding whether to exercise a power in subsection (1), the court must have regard to—
In this section—
"impugned act" means the thing (or purported thing) being quashed by the quashing order;
"relevant defect" means the defect, failure or other matter on the ground of which the court is making the quashing order.