For the purposes of paragraph 307-205(1)(a) of the Act, a superannuation interest in a public sector superannuation scheme is to be valued:
(a) by using the practice for valuing a superannuation interest (other than an interest that supports a superannuation income stream mentioned in paragraph 307-205.02(2)(a)) that was used by the scheme immediately before 28 June 2007; or
(b) if there was not a practice for valuing an interest at that time--by using the method in subsection 307-205.02(3).