New South Wales Consolidated Acts(cf 1919 No 6, s 163E (6))
If the Supreme Court makes an order under this Division confirming a power of
an attorney (whether in whole or in part), any act done by the attorney after
the order takes effect that is within the scope of the power is, to the extent
it is confirmed, taken to be as good for all purposes and between all persons
as if, at the time when the order took effect, the principal were of full
capacity and had in due form confirmed the power of attorney to the extent of
the order of confirmation.