Section 170 of the Income Tax Assessment Act 1936 does not prevent the amendment of an assessment if:
(a) the assessment was made before the commencement of this section; and
(b) the amendment is made within 2 years after that commencement; and
(c) the amendment is made for the purpose of giving effect to items 204 to 208 of Schedule 7 (M iscellaneous amendments) to this Act.