Mich. Comp. Laws § 722.54
This act does not impair or affect any act done, offense committed or right accruing, accrued or acquired, or a liability, penalty, forfeiture or punishment incurred before this act takes effect, but the same may be enjoyed, asserted and enforced, as fully and to the same extent as if this act had not been passed. Such proceedings may be consummated under and in accordance with the law in force at the time the proceedings are or were commenced. Proceedings pending at the effective date of this act and proceedings instituted thereafter for any act, offense committed, right accruing, accrued or acquired, or liability, penalty, forfeiture or punishment incurred before the effective date of this act may be continued or instituted under and in accordance with the law in force at the time of the commission of the act, offense committed, right accruing, accrued or acquired, or liability, penalty, forfeiture or punishment incurred.
MCL 722.54