After transfer all my data from a Win10 Thunderbird installation to a new Win11 PC with copy - paste procedure of the profiles from Local and Roaming sub folders of the old PC to the new one, I noticed the following problem (both Thunderbird installations are similar last updates etc.) All the accounts, calendars, etc are ok in the new PC, but for folders with Greek letters there are no emails inside them through Thunderbird (emails and subfolders are shown on File explorer) and also all the subfolders of these folders are not shown. After close and re-activate Thunderbird these folders with Greek spelling are double still without mails and subfolders. I made the same procedure of transferring all data from old PC to new one with no result. Any idea?