Michigan Compiled Laws, Chapter 449. Partnerships § 449.1105

Sec. 105. (a) Each limited partnership shall continuously maintain in this state both of the following:

(b) An agent for service of process on a domestic or foreign limited partnership may resign by filing a written notice thereof with a general partner of such domestic or foreign limited partnership and with the administrator. The general partners shall promptly appoint a successor agent and shall promptly cause the certificate of limited partnership to be amended, in the case of a domestic limited partnership, or a certificate pursuant to section 905  2 to be filed, in the case of a foreign limited partnership, to reflect such appointment. The appointment of the resigning agent terminates upon the (i) appointment of a successor and the filing of a certificate of amendment or restated certificate of limited partnership, in the case of a domestic limited partnership, or a certificate pursuant to section 905, in the case of a foreign limited partnership, reflecting such appointment, or (ii) expiration of 30 days after receipt of the notice by the administrator, whichever first occurs.