621.04  Exemptions.--This act shall not apply to any individuals or groups of individuals within this state who prior to the passage of this act were permitted to organize a corporation or limited liability company and perform personal services to the public by the means of a corporation or limited liability company, and this act shall not apply to any corporations or limited liability companies organized by such individual or group of individuals prior to the passage of this act; provided, however, an individual or group of individuals or any such corporation or limited liability company may bring themselves and such corporation or limited liability company within the provisions of this act by amending the articles of incorporation, if a corporation, or the articles of organization, if a limited liability company, in such a manner so as to be consistent with all the provisions of this act and by affirmatively stating in the amended articles that the shareholders or members have elected to bring the corporation or limited liability company within the provisions of this act.