Queensland Consolidated Acts(1) A private Act does not—
(a) affect pre-existing rights in a way prejudicial to the Crown or another person; or
(b) impose liabilities on the Crown or another person in relation to previous acts or omissions;
except so far as the Act otherwise expressly provides.
(2) Subsection (1) does not affect rights conferred, or liabilities imposed, on—
(a) a person at whose instance, or for whose special benefit, the Act is passed; or
(b) another person claiming by, through or under such a person.