California Code, Corporations Code - CORP § 3303

(a) After the approval, as provided in Section 3302, of a plan of conversion by the board and the outstanding shares of a social purpose corporation converting into a domestic other business entity, the converting social purpose corporation shall cause the filing of all documents required by law to effect the conversion and create the converted entity, which documents shall include a certificate of conversion or a statement of conversion as required by Section 3304, and the conversion shall thereupon be effective.

(b) A copy of the statement of partnership authority, certificate of limited partnership, or articles of organization complying with Section 3304, duly certified by the Secretary of State on or after the effective date, shall be conclusive evidence of the conversion of the social purpose corporation.