The provisions of this part apply to all corporations sole organized either before or after March 30, 1878, whether or not the corporations organized before have elected to continue their existence under the Civil Code or elect to continue their existence under this code, except that Sections 10002, and 10012 to 10015, inclusive, do not apply to corporations sole formed before March 30, 1878, unless they have elected to continue their existence under the Civil Code or under this code.