Notwithstanding the repeal by this Act of section 258 of the M1Customs and Excise Act 1952, of paragraph 5 of Schedule 2 to the M2Finance Act 1970, and of paragraph 2(8) of Schedule 4 to the M3European Communities Act 1972, that section (together with Schedule 6) as it had effect immediately before the entry date within the meaning of the said Act of 1972, shall continue to have effect for cases in which the value of goods falls to be determined as at a time before that date.