I wanted to share an issue that I came across, as well as thesolution. I run a lot of welded components through COSMOS, so Iinsert a new part into an assembly, and then create a join featurein that part for the welded component I am going to test. One thingI have noticed is that if "Force Surface Contact" is checked, thenew joined part won't always update if you change an individualcomponent. Uncheck that box and it should update correctly.

SWX 2006 SP5.1 / COSMOS 2006 SP5.0SolidworksAssemblies