Hawaii Revised Statutes Division 2. Business § 415A-28

(a) This chapter shall apply to all existing professional corporations organized under any general act of this State which is repealed by this chapter.

(b) Any corporation organized under any act of this State which is not repealed hereby may become subject to the provisions of this chapter by delivering to the director duly executed articles of amendment stating that the corporation elects to become subject to this chapter and containing the amendment of its corporate name or purposes as may be required to comply with this chapter.

(c) This chapter shall not apply to any corporation now in existence or hereafter organized under any act of this State which is not repealed hereby unless the corporation voluntarily becomes subject to this chapter as provided in this chapter, and nothing contained in this chapter shall alter or affect any existing or future right or privilege permitting or not prohibiting performance of professional services through the use of any other form of business organization. Nothing in this chapter shall affect the validity of any action taken by any corporation, or shall impair or affect the validity of any provision of the articles of incorporation or bylaws adopted by any corporation prior to July 1, 1987.