Section 7. A corporation may authorize, by vote of two-thirds of its members entitled to vote thereon or, in the case of a corporation having capital stock, the holders of two-thirds of its capital stock entitled to vote thereon at a meeting duly called for the purpose, with notice given as provided in section six B, any amendment of its articles of organization, including a change of its purposes or name, or a restatement of its articles of organization which restatement may affect any permitted amendment; provided, however, that any provision added to or change made in its articles of organization by such amendment could have been included in, and any provision deleted thereby could have been omitted from, original articles of organization filed at the time of such meeting; and provided also, that no articles of amendment or restated articles of organization shall be approved and filed by the state secretary (i) if as a result thereof the name of a corporation subject to section twenty-six would be changed, until after approval of such change by the state secretary, or (ii) if the purposes of any corporation are to be amended to include purposes which are such that the articles of organization of a corporation newly organized under this chapter for such purposes must be approved by any department or officer of this commonwealth as a condition of organization under this chapter, until after approval of the articles of amendment or the restated articles of organization by such department or officer. Articles of amendment shall be signed and submitted to the state secretary in the manner prescribed in and subject to section seventy-two of chapter one hundred and fifty-six B, and restated articles of organization shall be signed and submitted to the state secretary in the manner prescribed in and subject to section seventy-four of said chapter one hundred and fifty-six B.