Mich. Comp. Laws § 125.4328

Sec. 328. Notwithstanding the limitation provided by section 302(1) on having more than 1 authority, if an authority district is part of an area annexed to or consolidated with another municipality, the authority managing that authority district shall become an authority of the annexing or consolidated municipality. All obligations of that authority incurred pursuant to development plans or tax increment plans, all agreements related to the plans, and bonds issued pursuant to this part shall remain in effect following the annexation or consolidation.