Dear Mozilla community, I was re-ordering the main tabs for daily use. The little blue line that indicates a move-change was about to show up when my finger slipped from the Apple Magic trackpad. The TAB that I use for dissertation work (PHD) disappeared. Thinking that it simply was transferred to the my Bookmarks, I checked there. No joy. I also checked to the bookmark menu TAB for my university teaching work. Not there either? Hmm. I searched for the Bookmark (PHD) and I am not able to locate it. Any suggestions? I would be most grateful. Sincerely, AM