Mich. Comp. Laws § 451.405

Sec. 5. This act is intended to be remedial and to be liberally construed and to be supplemented by rule of court if necessary or expedient to the accomplishment or furtherance of the intents and purposes thereof. This act shall be applicable to and in all foreclosure proceedings of the nature aforesaid pending at the time of the coming into effect hereof in which the sale shall not then have been confirmed as well as to and in all such proceedings begun after the coming into effect hereof. If any provision hereof shall be found invalid or unenforceable the remaining provisions hereof shall not be affected thereby.