(1) The Treasurer may amend or revoke, by notice provided to the Government Business Enterprise and the Portfolio Minister, a declaration made under section 61(3) .(2) Before amending or revoking a declaration made under section 61(3) , the Treasurer must consult with the Board and the Portfolio Minister.(3) The amendment or revocation of a declaration made under section 61(3) takes effect on the day specified in the notice referred to in subsection (1) .