A mutual insurance holding company is deemed to be an insurer subject to this title and shall automatically be a party to any proceeding under this title involving an insurer that, as a result of a reorganization pursuant to Code Section 33-13A-3 or a merger pursuant to Code Section 33-13A-4, is a subsidiary of the mutual insurance holding company or one or more intermediate stock holding companies. In any proceeding involving the reorganized stock insurer, the assets of the mutual insurance holding company are deemed to be assets of the estate of the reorganized stock insurer for purposes of satisfying the claims of the reorganized stock insurer's policyholders. A mutual insurance holding company shall not be dissolved or liquidated without the prior approval of the Commissioner.