Here's the scenario. I'm kind of impatient, so I make some sort of multibody part model for some sort of analysis and I don't think to assign materials properties until I get into Simulation. I then assign materials, but then I want to run another simulation on the same model, and then I wish that I'd assigned the materials at the model level so that any subsequent simulation would inherit the model materials. I then go back and assign the materials at the model level. To ensure consistency, I want to use just those materials in the simulation that I've already defined. However, the materials that I've assigned at the Simulation level stick and I can't figure out how to remove them. SolidWorks help shows how to remove the material from a single body part but not a multibody part. Can it be done? I seem to remember in the past there was an option to explicitly assign the material from the solid model, but I can't find it now.