Modification of the terms of the subscribers' agreement or of the power of attorney of a domestic reciprocal insurer shall be made jointly by the attorney and the subscribers' advisory committee. No modification of a domestic, foreign or alien reciprocal insurer's power of attorney or subscribers' agreement shall be effective retroactively, nor as to any insurance contract issued prior thereto, and such modification shall be reasonable and equitable, and shall be filed with the commissioner.
West Virginia Legal Code