Hello, for a dual installation Windows & Linux, I have 1. made a backup of the Thunderbird profile directory 2. made a symbolic link for .thunderbird, pointing to the Windows TB profile directory 3. started Thunderbird on Linux. TB immediately started to download things (I believe emails). Size of Backup: 4213 MB Size of new profile: 3338 MB Roughly 1 Gigabyte data is missing!! Some files are new, some old files are gone... and it seems that the bulk of missing data was in a file called 'Entw&APw-rfe-1' (German for Drafts). This file is missing now (see below). Also the file 'Gesendet-1' (German for Sent-1) is much smaller now. What is going on? Why has this happened?? Backup: -rwxrwxrwx 1 root root 1325 22. Jun 2017 Drafts-1 drwxrwxrwx 1 root root 0 22. Jun 2017 Drafts-1.mozmsgs -rwxrwxrwx 1 root root 3117 17. Mai 12:43 Drafts-1.msf -rwxrwxrwx 1 root root 0 22. Jun 2017 Drafts.msf -rwxrwxrwx 2 root root 625656839 10. Sep 20:36 'Entw&APw-rfe-1' drwxrwxrwx 1 root root 12288 10. Sep 20:36 'Entw&APw-rfe-1.mozmsgs' -rwxrwxrwx 2 root root 8333 10. Sep 21:23 'Entw&APw-rfe-1.msf' -rwxrwxrwx 2 root root 1357 25. Apr 2011 'Entw&APw-rfe.msf' -rwxrwxrwx 2 root root 656950334 10. Sep 20:39 Gesendet-1 drwxrwxrwx 1 root root 1048576 10. Sep 21:16 Gesendet-1.mozmsgs -rwxrwxrwx 2 root root 982060 10. Sep 22:58 Gesendet-1.msf -rwxrwxrwx 1 root root 1353 25. Apr 2011 Gesendet.msf After running on Linux: drwxrwxrwx 1 root root 12288 10. Sep 20:36 'Entw&APw-rfe-1.mozmsgs' -rwxrwxrwx 1 root root 2439 11. Sep 17:21 'Entw&APw-rfe.msf' -rwxrwxrwx 1 root root 507661402 11. Sep 16:11 Gesendet drwxrwxrwx 1 root root 1048576 10. Sep 21:16 Gesendet-1.mozmsgs -rwxrwxrwx 1 root root 870901 11. Sep 17:32 Gesendet.msf