Interoperability Between Versions

This topic describes how to open an Autodesk Civil 3D 2023 drawing and view the Autodesk Civil 3D objects in a prior version of the software. It also describes interoperability between Autodesk Civil 3D 2023 and prior versions.

Opening an Autodesk Civil 3D 2023 Drawing in a Prior Version of AutoCAD Civil 3D

• Drawings saved in Autodesk Civil 3D 2023 can be opened in Autodesk Civil 3D versions 2019 through to 2022 and AutoCAD Civil 3D 2018.
• To open an Autodesk Civil 3D 2023 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 2023 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 2023 and prior versions

This section describes interoperability between Autodesk Civil 3D 2023 and prior versions.

Subassembly PKT files with auxiliary curve geometry

Opening a Subassembly Composer 2023 PKT file in a prior version of Subassembly Composer

• Subassembly PKT files created in Subassembly Composer 2023 that contain auxiliary curve geometry cannot be opened in Subassembly Composer 2022 or prior versions due to the new auxiliary curve geometry type. To correctly show the auxiliary curve geometry, the PKT files must be used in Civil 3D 2023.