Wash. Rev. Code § 26.21A.146
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 RCW 26.21A.275, communicate with a tribunal outside this state pursuant to RCW 26.21A.280, and obtain discovery through a tribunal outside this state pursuant to RCW 26.21A.285. In all other respects, Articles 3 through 6 of this chapter do not apply and the tribunal shall apply the procedural and substantive law of this state.
RCW 26.21A.146
Effective date-Conflict with federal requirements-Waiver- 2015 c 214 : See notes following RCW 26.21A.010.
Denial of waiver- 2015 c 214 : See note following RCW 26.21A.115.