I created a new mail identity as a test, because the Main one was giving me trouble.  I got the test one running fine, so I'd like to stick with it, but I want to see if there's a way to move the cached email addresses to the new identity. (when you start typing an email address, and it automatically populates recent addresses).  I'm trying to find info on this, but the internet hasn't been helping much.  Is this a .olk file?