You can import various data that has been exported from previous Autodesk Navisworks sessions, such as current search criteria, viewpoints, search sets. You can also import Intergraph PDS review data, including: PDS Tags (.tag) and PDS Display Sets (.dst).
You can also import 2D sheets and 3D models from DWF, DWF(x), NWD, or NWF files to the file currently open in Autodesk Navisworks. See Add Sheets/Models to the Currently Opened File.