The child's legal residence would stay in Michigan. A parent can't change that without a court order. In fact, a parent cannot even change the residence of child over 100 miles from the original residence at the time of the order. The law states: A parent of a child whose custody is governed by court order shall not change a legal residence of the child to a location that is more than 100 miles from the child’s legal residence at the time of the commencement of the action in which the order is issued. A court hearing is required and certain factors are considered by the court.
I agree with Ms. Stone. Contact an attorney as soon as possible about your situation.
Kennedy Law Office, PLLC
Disclaimer: No attorney-client relationship has been established. Please contact an attorney about your legal rights. This answer is for educational purposes only.