After commencing an action under ORCP 3 or after commencing a third-party action under ORCP 22, a party named will only be removed from the case as a party by entry of a court generated order pursuant to UTCR 7.020 or by an appropriate form of judgment (Limited or General) presented to the court. Merely omitting a party previously named from an amended pleading does not remove that party from the case.
Multnomah Supp. L. R. 5.071