Wis. Stat. § 769.210

A tribunal of this state exercising personal jurisdiction over a nonresident in a proceeding under this chapter, under other law of this state relating to a support order, or recognizing a foreign support order may receive evidence from outside this state pursuant to s. 769.316, communicate with a tribunal outside this state pursuant to s. 769.317, and obtain discovery through a tribunal outside this state pursuant to s. 769.318. In all other respects, subchs. III to VI do not apply, and the tribunal shall apply the procedural and substantive law of this state.