Interoperability Between Versions

This topic describes how to open an Autodesk Civil 3D 2022 drawing and view the Autodesk Civil 3D objects in a prior version of the software. It also describes interoperability between Autodesk Civil 3D 2022 and prior versions.

Opening an Autodesk Civil 3D 2022 Drawing in a Prior Version of AutoCAD Civil 3D

Drawings saved in Autodesk Civil 3D 2022 can be opened in Autodesk Civil 3D 2021, Autodesk Civil 3D 2020, Autodesk Civil 3D 2019, and AutoCAD Civil 3D 2018.
To open an Autodesk Civil 3D 2022 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 2022 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.

Interoperability Between Autodesk Civil 3D 2022 and prior versions

This section describes interoperability between Autodesk Civil 3D 2022, Autodesk Civil 3D 2021, Autodesk Civil 3D 2020, Autodesk Civil 3D 2019, or AutoCAD Civil 3D 2018.

Alignments with new curve groups

Opening an Autodesk Civil 3D 2022 drawing in a prior version

The new alignment curve group types created in Autodesk Civil 3D 2022 can be converted to fixed entities in order to edit them in a prior version of Civil 3D. For more information, see To Convert Alignment Curve Groups to Fixed Entities.