Cal. Corporations Code § 16913

(a) The merger of any number of domestic partnerships with any number of foreign partnerships or foreign other business entities shall be required to comply with Section 16910. (b) If the surviving entity is a domestic partnership or a domestic other business entity, the merger proceedings with respect to that partnership or other business entity and any domestic disappearing partnership shall conform to the provisions of this chapter governing the merger of domestic partnerships, but if the surviving entity is a foreign partnership or a foreign other business entity, then, subject to the requirements of subdivision (d), the merger proceedings may be in accordance with the laws of the state or place of organization of the surviving partnership or surviving other business entity. (c) If the surviving entity is a domestic other business entity or is a domestic partnership in a merger in which a domestic other business entity is also a party, the certificate of merger shall be filed as provided in subdivision (b) of Section 16915, and thereupon, subject to subdivision (a) of Section 16912, the merger shall be effective as to each domestic constituent partnership and domestic constituent other business entity. (d) If the surviving entity is a foreign partnership or foreign other business entity, the merger shall become effective in accordance with the law of the jurisdiction in which the surviving partnership or surviving other business entity is organized, but shall be effective as to any domestic disappearing partnership as of the time of effectiveness in the foreign jurisdiction in accordance with Section 16912.