Indiana Code Title 27. Insurance § 27-1-9-12

Sec. 12. (a) In case of a merger or consolidation between a domestic and a foreign company, the articles of merger or consolidation shall be regarded as executed by the proper officers of said foreign company when such officers are duly authorized to execute same through such action on the part of the directors, shareholders, members, or policyholders of said foreign company as may be required by the laws of the state where the same is incorporated;  and upon execution, said articles of merger or consolidation shall be submitted to the commissioner of insurance or other officer at the head of the insurance department of the state where such foreign company is incorporated.  No such merger or consolidation shall take effect until it shall have been approved by the insurance official of the state where said foreign company is incorporated nor until a certificate of his approval has been filed in the office of the department of insurance of the state of Indiana.  Such submission to and approval by the proper official of such other state shall not be required unless the same are required by the laws of such foreign state.  The domestic company involved in such merger or consolidation shall not through anything contained in this section be relieved of any of the procedural requirements enumerated in the preceding sections of this article.

(b) No merger or consolidation between a domestic and a foreign company shall take effect, unless and until the surviving or new company, if such is a foreign company, shall file with the department a power of attorney appointing the commissioner and his successors in office, the attorney for service of said foreign company, upon whom all lawful process against said company may be served.  Said power of attorney shall be irrevocable so long as said foreign company has outstanding in this state any contract of insurance, or other obligation whatsoever, and shall by its terms so provide.  Service upon the commissioner shall be deemed sufficient service upon the company.