(1) The district attorney of the prosecutorial unit that consists of Brown County and the district attorney of the prosecutorial unit that consists of Milwaukee County shall each assign one assistant district attorney in his or her prosecutorial unit to be a sexually violent person commitment prosecutor. An assistant district attorney assigned under this subsection to be a sexually violent person commitment prosecutor may engage only in the prosecution of sexually violent person commitment proceedings under ch. 980 and, at the request of the district attorney of the prosecutorial unit, may file and prosecute sexually violent person commitment proceedings under ch. 980 in any prosecutorial unit in this state.(2) If an assistant district attorney assigned under sub. (1) prosecutes or assists in the prosecution of a case under ch. 980 in a prosecutorial unit other than his or her own, the prosecutorial unit in which the case is heard shall reimburse the assistant district attorney’s own prosecutorial unit for his or her reasonable costs associated with the prosecution, including transportation, lodging, and meals. Unless otherwise agreed upon by the prosecutorial units involved, the court hearing the case shall determine the amount of money to be reimbursed for expert witness fees under this subsection.