Using latest Zimbra Desktop 7.1.4 GA (build 11299)
I'm syncing a yahoo account and Zimbra Desktop does have a "Junk" folder that it created which is empty, it allows me the option to 'turn on' sync for it, and I did expecting it to sync the emails from my Yahoo's built-in "SPAM" folder but it does not.

Is there a simple way to rename the Junk folder to SPAM to fix this? The "Rename folder" options though are disabled, the only thing I can do on the Junk folder is either turn on sync or turn off sync.

Any fix/workaround for this? More importantly how about sync for the DRAFTS FOLDER? ie my other reply to an old post about this:

Draft folder not syncing in Zimbra Desktop