data moved from server to raid – folders exist but no file contents

WIN OS – multiple versions, multiple machines.
I had to move several GB’s of data off our network server, and “moved” (‘move to folder’) the data to a RAID5 storage . However, although the folders exist, even drilled down several layers, there are no contents – no files of any type (.doc, .jpg, .ppt, .xcl, etc…). Since the stff was moved, there’s nothing left on the server to recapture (not to mention I did this a few months ago, and recently needed to access some of the data).
Any ideas???