I use Thunderbird for work, and I need to use more than one computer (desktop and laptop - both Macs). I've been able to successfully migrate everything over by copying the Profile folder, but tags and filters won't go over. The address book didn't either, but I just used the export/import tool for that. I've re-dragged over all the filter files, but it's still not working. I have to manually create the tags but when I tag an email on one computer, it won't tag it on the other.