In reply to Wayne's question (sorry for the delay in my reply), copying tagged messages between folders on the server (IMAP) or from the server to a local folder does not seem to cause loss of those tags any more. However, after reading [bug 378973] I tested and found that my local tags were lost after deleting the containing folder's .msf file. Furthermore, when I look at the message source (both on the server as well as local) I do not see any X-Mozilla-Keys headers. I'd be happy to file this info under that bug, but I saw that it was closed as resolved. I'm using v3.1.5, and could not find a field showing which version fixes this issue so I have no way to tell what behaviour to expect.
In reply to Wayne's question (sorry for the delay in my reply), copying tagged messages between folders on the server (IMAP) or from the server to a local folder does not seem to cause loss of those tags any more. However, after reading [bug 378973] I tested and found that my local tags were lost after deleting the containing folder's .msf file. Furthermore, when I look at the message source (both on the server as well as local) I do not see any X-Mozilla-Keys headers. I'd be happy to file this info under that bug, but I saw that it was closed as resolved. I'm using v3.1.5, and could not find a field showing which version fixes this issue so I have no way to tell what behaviour to expect.
Thanks!