Land Titles Act 1925

The original of any duplicate grant or certificate of title which, or a certified copy of which, is handed over or delivered to the Commonwealth under section 39 shall, as from the date of the handing over or delivery, be deemed to be an original grant or certificate of title delivered under this Act to the proprietor entitled to the land described therein.

Any instrument or document relating to land included in a grant or certificate of title (the duplicate or a certified copy of the duplicate of which is handed over or delivered to the Commonwealth under section 39) which—

was executed prior to the date of the commencement of this part; and

would have been entitled to registration under the Real Property Act 1900 (NSW) if the land were under that Act;