Except as provided in RCW 71A.10.901, this title shall govern:

(1) The continued provision of services to persons with developmental disabilities who are receiving services on June 9, 1988.

(2) The disposition of hearings, lawsuits, or appeals that are pending on June 9, 1988.

(3) All other questions or matters covered by this title, from June 9, 1988.