Land classified under the provisions of RCW 84.34.020 (2) or (3) which meets the definition of forestland under the provisions of chapter 84.33 RCW, upon request for such change made by the owner to the granting authority, shall be reclassified by the assessor under the provisions of chapter 84.33 RCW. This change in classification shall be made without additional tax, applicable interest, penalty, or other requirements set forth in chapter 84.34 RCW: PROVIDED, That subsequent to such reclassification, the land shall be fully subject to the provisions of chapter 84.33 RCW, as now or hereafter amended.