(2) A supersedeas undertaking may be served and filed by an appellant at any time while a case is pending on appeal.
(3) The original of an undertaking on appeal, with proof of service, must be filed with the trial court administrator. A copy of the undertaking must be served on each adverse party on appeal in the manner prescribed by ORCP 9 B. [1997 c.71 §2; 1999 c.367 §7]