Informal probate; unavailable in certain cases.

Mich. Comp. Laws § 700.3304, under ESTATES AND PROTECTED INDIVIDUALS CODE.

Mich. Comp. Laws § 700.3304

Sec. 3304. The register shall deny an application for informal probate if the probate relates to 1 or more of a known series of testamentary instruments, not including a will and 1 or more codicils to that will, the latest of which instruments does not expressly revoke the earlier.