Michigan Compiled Laws, Chapter 117. Home Rule Cities § 117.14b

Sec. 14b. Whenever the boundaries between cities lying within the same county and subject to this act divide platted lots, or are affected by the relocation of a river or of a natural drain or a street or highway, the boundaries may be relocated along adjacent lot lines or to the center of a common street or a common natural boundary upon resolution of the governing body of each city and upon agreement of the individual property owners affected. Boundaries shall be relocated so that the city in which the major part of the land is located shall gain the entire lot in case of following lot lines. A copy of each resolution shall be recorded with the register of deeds of the county where the land is situated.