This paper examines traces (or copies) associated with wh-scarmbling against various aspects of LF representation - scope interpretation, weak crossover, and Pesetsky's(1987) Path Containment Condition. The result shows us that a trace/copy, if ever created by wh-scrambling, acts as though invisible at the interface level LF. By defining reconstruction as a trace effect, coupled with the minimalist assumption that a syntactic object with no LF role need not be represented on that level(i.e.,'representational economy'), we obtain a substantial argument against wh-scrambling reconstruction. To the extent that scrambling involves a feature-checking operation, this finding supports for the view that syntactic elements remain at LF in the position where their features are erased(Boeckx 2001,Miyagawa 2001).