s 4
Where— (a) a joint scheme is authorised by an order under sub-paragraph (1) of paragraph 2, and (b) that sub-paragraph is amended by an order under sub-paragraph (5) of that paragraph, and (c) the maximum amount of money which may be distributed under section 25(1) in any year under the scheme does not exceed the amount specified in paragraph 2(1) as so amended, the scheme shall be treated for the purposes of this Schedule as if the maximum amount of money which may be distributed under section 25(1) in any year under the scheme continued to exceed the amount for the time being specified in paragraph 2(1).