hi thank you for the instructions.. I wasn't sure why there are some folders i failed to move, and it gave me a message that it had imported before. Actually my purpose is to 're-import' that folder to another directory. Anyway, i end up move that folder through explorer and re-import it, somehow the changes are gone..but good things just a few images.
lightroom is good to manage images, but i guess it takes some time to learn it.