AutoEdge Selected is a 3ds Max script from Jon Seagull, built to make CAD cleanup less painful, specifically for .3ds objects exported from AutoCAD. You select a group of imported 'Mesh' objects in the scene, then hit a toolbar button to run the whole cleanup in one go.
From that single button, the script converts all the selected objects to Editable Meshes, selects all edges, and performs Auto Edge at the current threshold. It bundles those three steps so you don't have to apply them object by object across a batch of imported geometry.
Listed as version 0.5 on ScriptSpot, the tool is available free here, with the download and further details on the developer's page at jonseagull.com. A demo video is also available for a closer look.