I have imported contours from GIS and converted the data to CAD objects. Any given contour elevation consists of multiple polylines. I want to combine all the polylines with the same elevation (object data) into one large polyline so when I mouse over a certain line, I can see that elevation across my whole map. I have approximately 40 different elevation increments, with each increment consisting of 20 - 100 polylines, so going through individually would take a very long time.
Is there any easy way to join polylines with matching object data (elevation)?