Mo. Rev. Stat. § 355.500: Corporations organized under chapter 352 to continue.

Chapter 352 shall remain in force and effect as to corporations heretofore or hereafter organized thereunder which do not accept the provisions of this chapter in the manner provided in section 355.020. Nothing contained herein shall affect the right to organize a corporation under said chapter 352 or the powers or rights of corporations heretofore or hereafter organized thereunder or the right of any corporation organized thereunder to act either within or without the state of Missouri.