Ok, if you don't migrate at first is there a way to do it later strictly from the external hd used via Time Machine? If so how? Because when I go to migration assistant amd get to the step where you select the files you want to migrate, they're all greyed out yet all are selected. I don't want to migrate the complete back up, I just want to choose certain apps and migrate my pictures, iTunes Library, Aperture Library, iPhoto, etc, etc.