I have three types of lighting fixtures on a plot I am working on, S4 Jrs, D60s, S4 LED. Every time I copy and paste a S4 Jr, all the objects in my active layers disappear. When I try to copy and paste the other two fixtures vwx recognizes the new fixture but the symbol doesn't show up anywhere. I tried restarting Vectorworks and it didn't help. How do I fix this?