Amendment. The Bank may, at any time, amend or modify the Plan in whole or in part, by action of its full Board of Directors; provided, however, that no amendment or modification shall be effective to decrease or restrict the rights of a Participant is his or her Deferral Account in existence at the time the amendment or modification is made, including the right to be paid Plan benefits accrued through the date of the amendment or modification in accordance with the Plan terms and the Participant’s distribution elections in effect at the time of the amendment or modification.