It's important that you know the coordinate system of the authoring software, such as Revit. In this case, we don't want shared. We want to go project internal. Now, as we look at some of the choices, you can convert linked files. You can convert element properties. Don't click on linked files, but click on element properties. Scroll down a little bit, and you can see where it says Export Current View. This is what's recommended. Let's uncheck Export Room Geometry. Let's hit okay. Notice that it will save it as Navisworks Cache file, and you cannot change that.