Wash. Rev. Code § 23.100.1305
(1) A plan of conversion of a converting entity may be amended:
(b) By its governors or interest holders in the manner provided in the plan, but an interest holder that was entitled to vote on or consent to approval of the conversion is entitled to vote on or consent to any amendment of the plan that will change:
(3) If a plan of conversion is abandoned after a statement of conversion has been delivered to the secretary of state for filing and before the statement is effective, a statement of abandonment, executed by the converting entity, must be delivered to the secretary of state for filing before the statement of conversion is effective. The statement of abandonment takes effect on filing, and the conversion is abandoned and does not become effective. The statement of abandonment must contain:
[ 2019 c 37 s 1305.]