Autodesk 12812-051462-9011 User Guide 3 - Page 1783

If you've set up one or more cameras in your Revit project, the File Link Manager or DWG/DXF Importer will recognize and link a camera when the Views (cameras) option is turned on. There is, however, a catch. Before you export a DWG from Revit, the camera view must be active and only the active camera will be exported. Avoid Entity and Entity, Blocks as Node Hierarchy ■ On the Advanced File Link Settings dialog, when choosing a Derive AutoCAD Primitives By option, avoid Entity and Entity, Block as Node Hierarchy. Elements are occasionally missing Revit embedded data. When this data is missing, the objects are "derived" according to the Derive AutoCAD Primitives By setting. Deriving by either of the Entity choices will not, generally, give you the end result you want and could result in a scene in 3ds Max that contains a vast number of individual objects. In particular, these settings can cause issues with railing balusters. Use Layer, Blocks as Node Hierarchy ■ On the Advanced File Link Settings dialog, use Layer, Block as Node Hierarchy, when choosing a Derive AutoCAD Primitives By option. The Layer, Blocks as Node Hierarchy derive by option, often gives the best results for linking DWG files, especially when the Revit project has other drawings, RVT links on page 8110, linked to it. Combining by Layer (node hierarchies or not) is the preferred setting. RVT links get exported to the DWG as xrefs. If you want the File Link Manager to preserve color and material assignments of those objects, Layer, Blocks as Node Hierarchy is the setting to use. Turn on Material Definitions and Assignments ■ The Use Scene Material Definitions and Use Scene Material Assignments on Reload switches are on the Advanced File Link Settings dialog. These two switches are quite important when you've got materials assigned in your Revit project. When the Use Scene Material Definitions switch is turned on, 3ds Max checks the scene for any currently used materials matching the exact same name as a material name in the linked DWG file. If a match is found, File Link does 7038 | Chapter 23 Managing Scenes and Projects