Mich. Comp. Laws § 700.3302: Informal probate; duty of register; effect of informal probate.

Sec. 3302.

Upon receipt of an application requesting informal probate of a will and after making the findings required by section 3303, the register shall issue a written statement of informal probate. Informal probate is conclusive as to all persons until superseded by an order in a formal testacy proceeding. A defect in an application or procedure relating to the application that leads to informal probate of a will does not render the probate void.