When moving a message from MH mailbox to IMAP mailbox it remains in the folder cache (.claws_cache file) and accordingly in message list. This bug first appears in 3.7.7 and still presents in 3.7.8.
This is probably the same bug which is described in: http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=2281
Yes, I think it is the same bug. I also have "Execute immediately when moving or deleting messages" unckecked. Bug appears only if I move a message between different mailboxes (IMAP -> MH = OK, MH -> IMAP = this bug, MH -> MH - not tested), not between different folders in the same mailbox.
Excuse me, I don't carefully read bugreport #2281. It is not the same bug.
May be the same causes, though.
Changes related to this bug have been committed. Please check latest CVS and update the bug accordingly. You can also get the patch from: http://www.colino.net/claws-mail/ 2010-12-17 [colin] 3.7.8cvs7 * src/folder.c Fix bug #2325, "messages remains in folder cache after moving from MH to IMAP boxes". Bug introduced in 3.7.6cvs53.
Patch solves this problem. Thank you.
*** Bug 2343 has been marked as a duplicate of this bug. ***