Okay it’s a tough title to digest but don’t worry, this will simply be a short quick tip post.
If you’re like me, you sometimes take the easy way out when adding feature line breaklines to a surface definition and select a bunch of feature lines with one crossing window. The trouble begins when you need to remove just one or two of those feature lines from the surface but you don’t want to remove and redefine all of the breaklines. Perhaps you also want to retain the feature line in your drawing and for some reason you would like to avoid using wblocks or the Windows Clipboard since this is not an Autodesk Best Practice for Civil 3D objects. This is no dilemma. Read more after the jump if you want to know a simple workaround to remove some of the feature lines from a multiple breakline surface definition while retaining them in your drawing.
Well here is the simple, quick workaround. Select the feature lines you want to remove. Copy the feature lines to a new site maintaining the original positions. You now have two or more identical overlapping feature lines on different sites. Select both of them with a crossing window. If you hold the SHIFT button and deselect the feature lines on top, you are left with only the original feature lines selected (The last object created is always on top.) Erase the feature lines and they are removed from the surface definition. You have the copy ready for editing and don’t forget to move the feature line back to the original site if needed.