Wash. Rev. Code § 25.10.796
(1) If a partner of a converting or constituent limited partnership will have personal liability with respect to a converted or surviving organization, approval and amendment of a plan of conversion or merger are ineffective without the consent of the partner, unless:
(2) An amendment to a certificate of limited partnership that deletes a statement that the limited partnership is a limited liability limited partnership is ineffective without the consent of each general partner unless:
[ 2009 c 188 s 1110.]