California Code, Corporations Code - CORP § 6017

A copy of an agreement of merger certified on or after the effective date by an official having custody thereof has the same force in evidence as the original and, except as against the state, is conclusive evidence of the performance of all conditions precedent to the merger, the existence on the effective date of the surviving corporation and the performance of the conditions necessary to the adoption of any amendment to the articles contained in the agreement of merger.