I have just recently starting using display states in my assemblies, instead of configurations, where I am just showing certain individual parts on my drawing. I find the display states to be friendlier than configurations on system performance. However, I've started to notice that sometimes when I open up my assemblies at a later time, random parts have been hidden inside certain display states that were not hidden before. I then have to go back and sift through (even down to the sub-assembly level) all my parts to "show" them again. Anyone else running into this issue? Thanks.