Uploaded by youtube user BIMcoach:
"When working with Autodesk Navisworks you may run into mapping errors or omissions. This is due to the limitations of property mapping in Navisworks 2014. This video provides a solution to workaround this issue by creating a new property mapping definition."
Also, remember this if you want to import MasterFormat catalog: at the very end of the Quantification Workbook tab there's the import/export catalog icon (on top).