7.—(1) For the purpose of any rule of a railway pension scheme other than a rule which provides—
(a)for any payment to be made to a member by way of a return of contributions and interest paid by him, with or without interest thereon;
(b)in the case of any benefit, that the amount payable is to be calculated by reference to the contributions paid by or in respect of a member.
any sums applied in accordance with sub-paragraph (a) of paragraph (5) of Regulation 4 or Regulation 5 of these Regulations in reducing the sums due to be paid by any person by way of contribution shall be deemed to be sums paid by way of contribution by that person.
(2) For the purpose of any rule of a railway pension scheme which enables a member of the scheme to whom these Regulations apply to elect or make arrangements for a transfer of all or any part of his annual superannuation allowance for the joint benefit of himself and any other person or for the benefit of any other person, any reference therein (however worded and whether express or implied) to an annual superannuation allowance shall have effect as if it were a reference to the amount of his annual superannuation allowance as reduced in accordance with the provisions of these Regulations and any election or arrangements so made by any such member shall be construed accordingly.