9E+WSections 13 and 67 of the Agricultural Holdings Act 1948 shall continue to have effect (to the exclusion of sections 10 and 79 of this Act) in relation to an agricultural holding in a case where the tenant gave notice under subsection (2)(b) of the said section 13 before 12th September 1984 as the said sections 13 and 67 had effect before that date.