Notwithstanding anything contained in this Act or in any judgment, decree or order of any Court or Tribunal to the contrary, on and after the date of commencement of the Bombay Sales Tax (Amendment) Act, 1985 (hereinafter in this section referred to as "the commencement date"), the Eligibility Certificate granted to any Registered dealer of an Edible Oil unit in accordance with the provisions of any Package Scheme of Incentives shall cease to have any effect in relation to the exemption from payment of tax under this Act or under the , and the Certificate of Entitlement issued in favour of such PG NO 78 Registered dealer by the Commissioner under entry 136 of the Schedule to the notification issued under section 41 shall stand automatically cancelled on the commencement date and such Registered dealer shall not be entitled to claim any further benefit of exemption from payment of such tax under the Eligibility Certificate or the Certificate of Entitlement on and after the commencement date, and he shall surrender the Certificate of Entitlement with all the unused Form BC which have been attested by the Sales Tax authorities to the Commissioner forthwith and in any case on or before the 31st day of August, 1985, unless he has already surrendered the same earlier.