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I am attempting to export to CAD a contour shapefile I have derived from LIDAR imagery.

Once exported I bring the contour DWG into ArchiCAD, drag ' drop, boom it opens, except:

Any curves are broken down into thousands of single small co-joined lines, and unlike Autocad, I don't have an effective-efficient way to polyline edit, make continuous sections into single polylines or splines as they'd be referred to in ArchiCAD.

Is there a way to set up my shapefile, edit or geoprocess it prior to export?

closed as unclear what you're asking by Andre Silva, Ian Turton Sep 8 '18 at 11:24

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    Did the contour shapefile have those fragment lines already? How did you create it? Can you share a sample file and show some illustrations (before and after?)? – Andre Silva Sep 7 '18 at 22:29