When the state is admitted into the Union, and the superior courts in the respective counties organized, the books, records, papers and proceedings of the probate court in each county, and all causes and matters of administration pending therein, shall, upon the expiration of the term of office of the probate judges, on the second Monday in January, 1891, pass into the jurisdiction and possession of the superior court of the same county created by this Constitution, and the said court shall proceed to final judgment or decree, order or other determination in the several matters and causes, as the territorial probate court might have done, if this Constitution had not been adopted. And until the expiration of the term of office of the probate judges, such probate judges shall perform the duties now imposed upon them by the laws of the Territory. The superior courts shall have appellate and revisory jurisdiction over the decisions of the probate courts, as now provided by law, until such latter courts expire by limitation.
Structure Washington state constitution