I have a beam system in place but I can not select any of the joists in the system unless I remove the system. I can not select them in plan or in section. I tried starting a new project to see if there was something weird about the project since I took it over from a former employee. I opened 2015 to see if maybe it was something I was doing and had no problem selecting a beam with the system intact. Is there a setting I might have inadvertently changed? I also have a hard time hiding items in a linked architectural model.