Wis. Stat. § 847.09
The circuit court of any county in which a mortgage, lien or charge is recorded may make an order discharging the mortgage, lien or charge of record on proof being made to the satisfaction of the court that the mortgage, lien or charge has been fully paid or satisfied and that the mortgagee or the owner of the lien or charge or his or her assignee is a corporation which has ceased to exist or which has no officer or agent in this state competent to discharge the same of record or that the mortgagee or the owner of the lien or charge or his or her assignee is a nonresident of the county where the mortgage, lien or charge is recorded, or is deceased, and in such case, that there is no administrator of the estate under the authority of this state. The register of deeds shall record the order or a copy thereof, certified by the clerk under the seal of the court, and the record shall have the same effect as the record of discharge by a mortgagee or owner of a lien or charge duly executed and acknowledged.
Wis. Stat. § 847.09