For exporting data to IMX for use in AutoCAD Civil 3D see the important note below on exchanging model data with AutoCAD Civil 3D, with or without using IMX. For use of IMX with other applications, use the step by step instructions in this topic.
Note: Data exchange between AutoCAD Civil 3D and InfraWorks enables Civil 3D users to open all or part of a model from within Civil 3D. See About Exchanging Data with Civil 3D. Civil 3D users can also open IMX files containing model data. For exporting an IMX file for use in AutoCAD Civil 3D, see To export model data to IMX for use in Civil 3D.
Note: Due to schema changes, an IMX file that you export from Autodesk InfraWorks 360 cannot be imported into any release of AutoCAD Civil 3D prior to the 2015 release.
When you export to IMX, all visible data is exported. In the Model Explorer panel, make the desired layers visible.
-
Note: Toggle
next to a feature class to make layers visible or to hide layers 
.
To export data to IMX
- Click
in the Utility Bar. Note: Only layers that are turned on when you start the export operation are exported. - In the Model Explorer panel, make the desired layers visible. Note: Toggle next to a feature class to make layers visible or to hide layers .
- Zoom out to see the area to export.
- Click
. - In the Export To IMX dialog box, specify the area to export:
- To populate the dialog box fields with the values of a recently executed export operation, click the down arrow next to Start With Recent Export. Select an export operation.
Recent exports are listed by their target file names.
- To export the entire model, select Use Entire Model.
- To specify an area to export, click Define Interactively and do the following:
- Click the first point on a bounding box for the data to include.
- Stretch the box to include the area you want, then double-click to finalize the selection.
- To export specific extents, enter values in the minimum and maximum X,Y boxes or click Load Extent From File and browse to a file containing the extents.
- To populate the dialog box fields with the values of a recently executed export operation, click the down arrow next to Start With Recent Export. Select an export operation.
- Select the target coordinate system by doing any of the following: Note: When preparing to exchange model data with AutoCAD Civil 3D, it is recommended that InfraWorks users follow the guidelines in the section on Coordinate Systems and Units in About Exchanging Data Between AutoCAD Civil 3D and Autodesk InfraWorks.
- Use the coordinate system shown. This is either the coordinate system assigned to the model or the last coordinate system you selected.
- To select from a coordinate system library, click
. - To specify a recently-used coordinate system, click the down arrow and select it.
- Specify the name and location for the exported file.
To change the location, click the folder icon and browse to the desired location.
- Click Export.