Mich. Comp. Laws § 559.143

Sec. 43. An expansion, contraction, or conversion of land or space in accordance with this act and the condominium documents shall be deemed to have occurred at the time of recording of an amendment to the master deed embodying all essential elements of the expansion, contraction, or conversion. At the conclusion of expansion of a condominium project a consolidating master deed shall be prepared and recorded by the developer in accordance with the provisions of this act and the condominium documents.