Yes you can. From last season the judges giving the GOEs are no longer informed whether a jump is downgraded or not. So if they do not see it they might well give positive GOEs. The most famous and controversial case happened in the ladies SP at the 2009 GP final where. yuna's 3Lz3T was downgraded b the technical panel but almost every judge gave her GOE+1 and +2. Further, but only very theoretically, according to communication 1557 an under rotated jump is o longer an error for which the final GOE must be in the minuses.