The Gmail servers can be problematic and this might be another temporary hiccough.
I can recall previous discussion about the first part of the error message, but in those instances the messages were being moved despite what was being said in the error message.
The second part of the error message is a mystery, as I can move (drag and drop) messages between IMAP and local folders, including the Inbox, without difficulty, so that part of the message does not appear to be valid.
<p>The Gmail servers can be problematic and this might be another temporary hiccough.</p><p>I can recall previous discussion about the first part of the error message, but in those instances the messages were being moved despite what was being said in the error message.</p><p>The second part of the error message is a mystery, as I can move (drag and drop) messages between IMAP and local folders, including the Inbox, without difficulty, so that part of the message does not appear to be valid.
</p>