(1) In addition to other requirements imposed by any provision of law, and subject to any confidentiality provisions established by law, each agency shall make all written final orders available for public inspection and copying and index them by name and subject.
(2) A written final order available for public inspection pursuant to subsection (1) may not be relied on as precedent by an agency to the detriment of any person until it has been made available for public inspection and indexed in the manner described in subsection (1) of this section. This provision is inapplicable to any person who has actual, timely knowledge of the order. The burden of proving that knowledge is on the agency.