Mo. Rev. Stat. § 375.216: Certificate of amendment effective, when — amendment not to affect any existing cause of action.

1. Upon the issuance of the certificate by the secretary of state, the amendment shall become effective and the articles shall be deemed to be amended accordingly.

2. No amendment shall affect any existing cause of action in favor or against the insurance company or any pending suit in which the insurance company is a party, or the existing rights of persons other than the shareholders, members or other group of persons voting thereon or entitled to vote thereon; and, in the event the insurance company name is changed by amendment, no suit brought by or against the company under its former name shall be abated for that reason.