I have a model that I added a display state to remove the back cover + screws of a box. I have done this many times before with no problem, but today I need to click the rebuild button after changing states in order to see the new state. Usually, just double clicking on the different state will change the mode without rebuild. I also noticed not all parts are acting this way. When I click on the default state, a couple labels show up, but not the back cover and screws. I have closed and restarted SW just in case, too. What crazy simple thing am I overlooking today?