Answer: Check that the common property of “Color” is added to the file.

For NavisWorks you need to turn on “Revit IFC” in the NavisWorks options. Note that it may affect the 3D geometry results in that software.

One solution may be to change some NavisWorks settings:
https://knowledge.autodesk.com/support/navisworks-products/troubleshooting/caas/sfdcarticles/sfdcarticles/Navisworks-color-issue.html

Answer: We have gotten reports about this in relation to NavisWorks. It has been related to “Revit IFC” being turned ON in the NavisWorks options.

Answer: You can change conversion rule by adding suffixes at the end of a property name. Some suffixes are VOLUME, LENGTH, AREA, ANGLE, MASS. In example under, length is used.