Mich. Comp. Laws § 24.314: Rules in process.

Sec. 114.

When an agency has completed any or all of the processing of a rule pursuant to Act No. 88 of the Public Acts of 1943, as amended, before July 1, 1970, similar processing required by this act need not be completed and the balance of the processing and the publication of the rule shall be completed pursuant to this act. An effective date may be added to such a rule although it was not included in the notice of hearing on the rule pursuant to subsection (1) of section 41, when such notice was given before July 1, 1970.