(1A)On and from the date of appointment of the Customs Authority for Advance Rulings referred to in the proviso to sub-section (1), the Authority shall act as an Appellate Authority, for the purpose of Chapter V of the Customs Act, 1962 (52 of 1962):Provided that the Authority shall not admit any appeal against any ruling or order passed earlier by it in the capacity of the Authority for Advance Rulings in relation to any matter under Chapter V of the Customs Act, 1962 (52 of 1962) after the date of such appointment of the Customs Authority for Advance Rulings.