§ 184. Application of this article. This article applies only to Churches of Christ, Scientist and Christian Science Societies, which are branches of The First Church of Christ, Scientist, in Boston, Massachusetts. Any such church or society heretofore incorporated shall hereafter be governed by the provisions of this article so far as applicable except that no person, who shall, when this article takes effect, be a duly qualified voter in any such previously incorporated church or society, shall be deprived of the right to vote at its corporate meetings by any provision of this article.