(a) This chapter is operative on July 1, 1997.
(b) This chapter is applicable to an adjudicative proceeding commenced on or after July 1, 1997.
(c) This chapter is not applicable to an adjudicative proceeding commenced before July 1, 1997, except an adjudicative proceeding conducted on a remand from a court or another agency on or after July 1, 1997.