Mich. Comp. Laws § 600.9924a
The records, files, pleadings, process, papers, dockets, journals and indices of justices of the peace, justice courts, municipal courts, police courts and the recorders court of the city of Cadillac abolished effective January 1, 1969, may be destroyed on or after January 1, 1977, except that dockets, journals and indices of those courts and justices of the peace may be disposed of only upon compliance with section 5 of Act No. 271 of the Public Acts of 1931, as amended, being section 399.5 of the Michigan Compiled Laws. This section shall not apply to a document or record subpoenaed by a court or otherwise ordered maintained and preserved for use as evidence upon the order of a court of competent jurisdiction before January 1, 1977. This section shall not bar or impair the right of a defendant to move the district court successor to the convicting court pursuant to Act No. 213 of the Public Acts of 1965, being sections 780.621 and 780.622 of the Michigan Compiled Laws, for an order setting aside the conviction.
MCL 600.9924a