I got updated by Firefox release 69.0.3 (64-bit), it went all right until it restarted. Some profile windows appeared, asking whether to import or not previous data. Default is no to import, I chose import as I like the browser to give hits of browsing. The result, all browsing history was deleted. I've got recent backup files, copied the full profile and used Profile manager. As soon as Firefox r69 runs, places.sqlite is renamed to places.sqlite.corrupt Passwords and bookmarks where restored. It seems that r69 uses a diferent database schema, thus historic information is not transferible. Import tool only shows options to import history from explorer and chrome. Is there a tool to import browsing history from Firefox previous releases?