Where a decision of the Commission made under section 93 of the Repatriation Act was applicable in relation to a service pension payable to a person immediately before the commencing date, that decision has effect, by force of this section, on and after that date to and in relation to the service pension payable to the person in accordance with section 8 of this Act as if the decision were an approval under section 122 of the Veterans ' Entitlements Act given by the Commission on the commencing date.