Mich. Comp. Laws § 554.551

Sec. 31. To the extent that this act by virtue of section 29(2) does not apply to a transfer made in a manner prescribed in former 1959 PA 172, or to the powers, duties, and immunities conferred by a transfer in that manner upon a custodian or a person dealing with a custodian, the repeal of former 1959 PA 172 does not affect that transfer or those powers, duties, and immunities.