A title plant that conforms on December 31, 1999, with ORS § 731.438 (1) and (2) (1997 Edition) satisfies the requirements of ORS § 731.438 (1) as amended by section 1, chapter 183, Oregon Laws 1999, if it also contains after that date a general index, adequate maps and currently posted tract or geographic indexes for all lands in the county. [1999 c.183 § 3]