Polygonal Viewport synced with View in SSM?

When I use the SSM and use the "Place on Sheet" command to create the Viewport from the MS View DWG file, it comes in only as a rectangular Viewport. I tried to see if there's a way to draw a Polyline and select it as a MS View but I don't think that's possible.

Any way to do this without breaking the link between the View DWG and the Sheet DWG? Thanks in advance.

Bump......