Sorry for the post, I figured it out from a reply from sfhowes on another thread. Unfortunately I cannot find it now to include it here. Basically what I did was, after finally finding where Linux put the .thunderbird folder ( Help - Troubleshooting information - about:profiles) I replaced the contents with the Thunderbird folder from Windows, then put the "profiles" folder contents directly into .thunderbird folder, then deleted the "profiles" folder. Then deleted the Profiles path from the two .ini folder contents. Then, after opening TB, had to choose the right profile to make it the default. Whew......