(4)Within sixty days of the commencement of the Insurance (Amendment) Act, 1950 (47 of 1950), every principal agent shall file with the insurer concerned a full list of insurance agents employed by him indicating the terms of the contract between the principal agent and each of such insurance agents, and, if any principal agent fails to file such a list within the period specified, any commission payable to such principal agent on premiums received from the date of expiry of the said period of sixty days until the date of the filing of the said list shall, notwithstanding anything in any contract to the contrary, cease to be so payable.