SolidWorks 2012 SP1.0
A coworker is having trouble getting parts to stay hidden/unhidden in his configurations. He has three parts in the default config, but when he changes to a new config, hides 2 of the parts, then switches back to default, the 2 parts stay hidden. Default is supposed to show all parts, where the other config is supposed to only show one part. Any ideas why this isn't working???