Just a heads up with the new (updated) assembly mirror command. It allows you to change confiurations of mirrored components. This is (was) great, but if you move either the parent or child component of this mirror feature, the system automatically reverts the configurations to the 'parent' configuration. This could be potentially nasty down the road for anyone who is unaware of this. We were going to use this all the time for plates and things that require a different hole pattern for example.... can't now.