Mich. Comp. Laws § 450.412

Sec. 2. Upon the filing of such new articles and reports and the payments of such fees, the charter of the corporation shall be revived and shall be in full force and effect and the corporate term shall be extended from the date of expiration of its original term or the date of the last extension of corporate existence. The validity of all corporate acts during such period of default shall not be affected by such default, forfeiture or prior expiration. Compliance with this act shall be made before January 1, 1975.