Wash. Rev. Code § 23.100.1311
(2) A domestic merging limited cooperative association may approve an amendment of a plan of merger:
(b) By its directors or members in the manner provided in the plan, but a member that was entitled to vote on or consent to approval of the merger is entitled to vote on or consent to any amendment of the plan that will change:
(4) If a plan of merger is abandoned after a statement of merger has been delivered to the secretary of state for filing and before the statement is effective, a statement of abandonment, signed by a party to the plan, must be delivered to the secretary of state for filing before the statement of merger is effective. The statement of abandonment takes effect on filing, and the merger is abandoned and does not become effective. The statement of abandonment must contain:
[ 2019 c 37 s 1311.]