If any provision of this Act or the application thereof to any person or circumstances is held invalid, the validity of the remainder of the Act and the application of such provision to other persons or circumstances shall not be affected thereby, and the provisions of the section of this chapter which is amended by such provision of this Act shall apply to such person or circumstances. Pending proceedings shall not be abated by reason of any provision of this Act but shall be disposed of pursuant to the provisions of this chapter, in effect prior to the effective date of this Act.