If—
(a) an appeal before the old Committee under section 43 of the old Act has not been completed before the commencement of this Act the new Committee may proceed to determine the appeal as if it were an application for a review of a decision of the Chief Commissioner under this Act; or
(b) a person, immediately before the commencement of this Act, had a right to appeal to the old Committee in respect of a decision of the Registrar under the old Act, this Act applies to that right as if it were a right to apply for review of a decision of the Chief Commissioner under this Act.