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Interoperability Between Versions

This topic describes how to open an Autodesk Civil 3D 2025 drawing and view the Autodesk Civil 3D objects in a prior version of the software.

Opening an Autodesk Civil 3D 2025 Drawing in a Prior Version of AutoCAD Civil 3D

  • Drawings saved in Autodesk Civil 3D 2025 can be opened in Autodesk Civil 3D 2018 through the current version.
  • To open an Autodesk Civil 3D 2025 drawing and view the Autodesk Civil 3D objects in a version of the software prior to AutoCAD Civil 3D 2018, set the PROXYGRAPHICS system variable value to 1 in Autodesk Civil 3D 2025 to save the graphics with the drawing and then use the Save As command to save the drawing to a prior drawing file format. When you open the drawing in a prior version of the software, the Autodesk Civil 3D objects will be displayed as proxy graphics.

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