Tipster James J. Olszewski shares a quick and easy way to convert AutoCAD objects to a polyline in AutoCAD verticals.
"This is a useful tip about an ever-present editing tool that many may not have noticed. When there is a line that you want to convert to a polyline, all you need do is select it, right-click, and choose Convert to Polyline from the right-click menu. If you then want to edit the new polyline (or any other polyline), simply select it, right-click, and select Polyline Edit from the right-click menu. Then right-click again to perform the operation you want."
Notes from Brian Benton, Cadalyst tip reviewer: This tip makes converting objects to polylines a breeze. Unfortunately this right-click option only exists in AutoCAD verticals, such as Civil 3D. I don't know why it isn't in standard AutoCAD, but it isn't.