Wis. Stat. § 75.44: Release.

On the payment of the costs by such defendant or defendants or the collection thereof the county shall execute a release to said defendant or defendants of all such right, title, interest or claim in said parcel or parcels of lands, duly acknowledging the same, and deliver it to the said defendant or defendants; and thereupon said action shall be discontinued as to the said parcel or parcels of land so released.