In an effort to minimize files stored on my server, I have been moving messages from my server to a local folder. Doing so, however, has resulted in those messages being removed from threaded conversations. For instance, I moved old sent messages from my server to a 'sent (archived)' folder on my computer. When I look at the threads those messages were a part of, all I see are the messages from the other party. Is it possible to re-incorporate these messages into a thread, without having to place them back on the server?