In any suit commenced under ORS § 192.680 (2), the plaintiff shall be required to present prima facie evidence of a violation of ORS § 192.610 to 192.705 before the governing body shall be required to prove that its acts in deliberating toward a decision complied with the law. When a plaintiff presents prima facie evidence of a violation of the open meetings law, the burden to prove that the provisions of ORS § 192.610 to 192.705 were complied with shall be on the governing body. [1981 c.892 § 97d; 1989 c.544 § 3]