Woah, woah, woah. Slow down a little. Nfs, cifs, scp? Exactly what path did these files take? Where did they originate? What path did they take? What operating systems do the computers involved run? (I see Redhat and Windows involved, but I don't know specifically how.) Are there three computers involved, or are you confusing nfs and smb/cifs (or is something else going on)?
I may have found an answer for you here
(relating to the WinSCP transfer)
OK, so I suppose that your server is OpenSSH, right?
OpenSSH does not announce support of UTF-8. If your server uses UTF-8 natively, you need to force WinSCP to use it. Please read FAQ.