Stacy, I never have elevations assigned to my parcel segments so I haven't had a need to do this. If I were to try this, I would get the parcel segment, get the start and end point XY's, delete the segment, than add the segment back with the AddLine or AddCurve methods...all using COM. An arc segment would be a bit complicated since the ParcelSegment doesn't give any of the arc data. As finicky as Parcels are, I would be hesitant to actually try this.