6(1)Where the responsible person gives notice of appeal against a decision on a claim on one or both of the grounds mentioned in paragraph 5(1)(a) above and, before the appeal is determined by the Special Commissioners, the Board and the responsible person agree on—
(a)the amount of the expenditure that ought to be allowed on the claim ; or
(b)the amount, if any, of the expenditure claimed which ought to be so allowed as qualifying for supplement under section 2(9)(b)(ii) of this Act,
the appropriate amount (if any) of the expenditure claimed or, as the case may be, claimed as so qualifying shall be treated for the purposes of this Part of this Act as having been allowed by the Board on the claim, and as having been so allowed on the date on which the notice of appeal was given.
For the purposes of this sub-paragraph the appropriate amount (if any) of the expenditure claimed or, as the case may be, claimed as so qualifying, is an amount thereof equal to the excess, if any, of the amount so agreed on over the corresponding amount or the total of the corresponding amounts allowed by the notice or notices previously given by the Board under paragraph 3 above.
(2)Where the responsible person gives notice of appeal against a decision on a claim on the ground mentioned in paragraph 5(1)(b) above and, before the appeal is determined by the Special Commissioners, the Board and the responsible person agree on the shares in which the amount of any expenditure allowed on the claim, or so allowed as qualifying for supplement under section 2(9)(b)(ii) of this Act, ought to be divided between the participators for the purposes of section 2(9)(b) of this Act, the shares so agreed on shall be deemed to be the shares stated in any notice previously given by the Board under paragraph 3 above on the claim, and shall apply in the case of any part of the expenditure claimed, or claimed as so qualifying, which is by virtue of this or the following paragraph treated as having been allowed on the claim.
(3)Where the Board and the responsible person agree on the matter mentioned in sub-paragraph (1)(a), sub-paragraph (1)(b) or sub-paragraph (2) above in the circumstances there mentioned, the corresponding ground of appeal shall be treated as having been abandoned; and where by virtue of this sub-paragraph all the grounds of the appeal fall to be so treated, the appeal itself shall be treated as having been abandoned.