Section 13. Section 4 (section 304(6) and (11)) shall apply to the following:
(1) Actions pending before the State Real Estate Commission as of the effective date of this act under section 14(1).
(2) Appeals from decisions of the commission pending as of the effective date of this act under section 14(1).
(3) Actions before the commission where appeal is still timely as of the effective date of this act under section 14(1).
(4) Actions before the commission commenced on or after the effective date of this act under section 14(1) which are based on acts which took place prior to the effective date of this act under section 14(1).