Yep, it is. 1.49.01 used to purge out any saved material settings when you loaded a material from the SU material library. It also purged all of your material settings on a copy and paste and importing a component. Those days are over! 2.0 keeps these settings.
So, when you create a material you like, just drag a copy of it from your material browser in SketchUp into a V-Ray material folder. That way, you have all your favorites ready to go. I have a library with glass, a few plastics, grass with bump, concrete, etc. Things I use all the time.
Another tip is make a library with a generic gray diffuse and a reflection layer at various glossiness levels and save those as a starting point for making plastics. For example, I have a library that has Plastic 90, Plastic 80, Plastic 70, etc. Then all I have to do is apply this from my library to my model and adjust the diffuse color right in SketchUp and I already have my reflection layer setup.
NOTE - that any maps such as reflection or bumps are not saved along with the SKM file, so you need to have a network library location that keeps them organized and in a central location.