The certificate of incorporation may be amended by the affirmative vote of a majority of the members or delegates present and acting at any regular meeting or at any special meeting called for that purpose, on 10 days' notice; if the amendment has first been approved by a 2/3 vote of the directors present and acting at a duly constituted meeting, and if the certificate as so amended is such as might have been originally made and filed under this chapter.
A certificate of the amendment under the association's seal, signed by the president and acknowledged by the secretary, shall be filed in the manner provided in section 4:13-6 of this Title.