I posted a question earlier, "I can't find a way to import the Inbox emails from older Thunderbird version to the new version. When I use the Thunderbird Menu>Tools>Import>Mail, I get a list; Becky! Internet Mail, Outlook and SeaMonkey, none of I which I use. I just want to import my old Inbox and Local Folders from the old Thunderbird I've been using for a decade. This should be easy. What gives?" and got some useful insight from another user. The apparent problem is that when installing the new Thunderbird, the entire history of old email folders have disappeared. Can I just uninstall the new Thunderbird to return the older version with it's folders?