This is a great program which would be worthy of 5 stars. But I took off 1 star for somewhat inadequate documentation.
I wanted to move my site from one subdomain to another, FROM html://wordpresstest.hjcs.org TO html://wp.hjcs.org . I was under the impression that the Migration Assistant would do all the work. But it did not.
Despite asking for details about my ftp logon in the setup screen, WPM did not actually move any files. I had to take care of that little detail manually. But once I did that, my site came up properly in its new home, because WPM did all the heavy lifting.