Any proceedings under ss. 51.81 to 51.85 shall be begun within one year after the flight referred to in ss. 51.81 to 51.85.
Wis. Stat. § 51.84
The limitation period commences on the date the committing state discovers the patient in the asylum state. State ex rel. Melentowich v. Klink, 108 Wis. 2d 374, 321 N.W.2d 272 (1982).