(1)The Scottish Ministers may by order amend subsection (1) of section 57 or paragraph (a) or (b) of subsection (2) of section 58 so as to substitute for the number of years for the time being mentioned in the provision in question such other number of years (not being a number which exceeds that mentioned in the provision as originally enacted) as may be specified in the order.
(2)An order under subsection (1) may contain such transitional provisions and savings as the Scottish Ministers think fit.