To Purge Invisible AEC Data

Use PURGEAECDATA to remove the invisible AEC data (AutoCAD Architecture and AutoCAD Civil 3D custom objects) in the drawing.

At the Command prompt, enter PURGEAECDATA.
Enter Yes to purge the invisible AEC data.

Note:

Install the AutoCAD Civil 3D Object Enabler to purge the Civil 3D custom objects.
Use PURGE to delete unused named objects such as block definitions and so on.

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