(1) All judicial jurisdiction, authority, powers, functions and duties of the county courts and the judges thereof, except the jurisdiction, authority, powers, functions and duties exercisable in the transaction of county business, are transferred to the circuit courts and the judges thereof:
(a) In Baker, Clackamas, Columbia, Coos, Douglas, Jackson, Josephine, Klamath, Lake, Lane, Marion and Tillamook Counties.
(b) In any county for which a county charter providing for such transfer is adopted under ORS 203.710 to 203.770, to the extent that the judicial jurisdiction, authority, powers, functions and duties were not previously transferred as provided by law.
(2) All matters, causes and proceedings relating to judicial jurisdiction, authority, powers, functions and duties transferred to the circuit courts and the judges thereof under this section, and pending in a county court on the effective date of the transfer, are transferred to the circuit court for the county.