This most recent update changed the location of Firefox data, rendering previous shortcuts useless, and all files were also deleted or rewritten completely when I restarted Firefox. All of my tabs are gone, there is no previous restore data, and there is no way for me to recover all of the tabs I previously had. If there is some way to recover my data after this migration it would be greatly appreciated, but if not, this is an incredibly frustrating update with a migration process that seemed unnecessary.