Conversion from Navisworks to DAE is not supported yet :(

Navisworks is a native file of Navisworks® project review software by Autodesk.

Navisworks files come in three formats: NWD, NWF, and NWC. An NWD is a single file that contains all model geometry, environment, viewpoints, and review markups. An NWF file is a list of links to the original files. It doesn't keep model geometry and, to be opened, requires access to the original CAD files. An NWC is a cache file created from any native CAD or laser scan files, when opened in Navisworks.

DAE is an interactive 3D file format used for exchanging digital assets between various 3D modeling systems and game engines.

The DAE format was created using COLLADA XML architecture, which is an open standard for transmitting digital assets between graphic applications, and now owned and developed by Khronos Group.

The following software can be used to view, alter, and process DAE: Bentley Systems MicroStation, Autodesk AutoCAD, Autodesk 3ds Max with the ColladaMax plugin, and Autodesk Maya with the ColladaMaya plugin.