8. Where an officer or servant to whom these Regulations apply has received after the date from which these Regulations have effect and before the date on which these Regulations come into operation, any payment under an existing scheme by way of a return of contributions and interest paid by him, with or without interest thereon—
(a)the sum to be transferred in accordance with Regulation 5 of these Regulations shall be reduced by the amount of that payment;
(b)the accrued pension rights payable to him by the Commission in accordance with sub-paragraph (a) of paragraph (1) of Regulation 6 of these Regulations shall be reduced throughout in the proportion which the payment bears to the transfer value or estimated capital value referred to in Regulation 5 of these Regulations;
(c)any lump sum to be paid to him by the Commission in accordance with sub-paragraph (b) of paragraph (1) of Regulation 6 of these Regulations shall be reduced by the amount of that payment;
(d)the accrued pension rights to be ensured to an officer or servant in accordance with paragraph (2) of Regulation 3 of these Regulations shall be reduced by reason of that payment in such manner as may be provided by the arrangement made under that paragraph;