Greetings guys,

I've tried finding something like like this in the forums but to no avail so I'm posting in hopes some1 can assist me.

So the task I'm trying to finish is to take a large set of closed 2d polylines which have some OD data attached to them and "drape" these onto a 3d surface. The problem I ran in to is that while I can drape the polyline to a surface I always lose the connected OD data which must remain.
I've tried everything I could think of: creating feature lines from these; featureelevsfromsurface commands and such and came short handed.

Anyone got an idea or workaround for this problem or some form of solution?
I've attached a small sample made in Civil 3d 2015 which has the TIN surface and a 2d polyline in layer "komiza-intsct" which is the 2d poly I need to drape.

Best regards,


Test.dwg