I just installed Thunderbird on a new Win 11 Pro 64-bit install. I have some Message filters that seem to be working. However, I have a local folder a_Name and under that I have sub folders Problems, jokes, plus some more. At first, I tried to drag messages to them, and they disappeared. Then I tried to use the file move command still disappeared, then I tried to use the copy command. That worked until I tried to move a message to the folder, and everything disappeared. I have now lost some irreplaceable emails. I have used Thunderbird for years. What gives with this, and how can I fix it?