file timestamp is changed to 2011 while moving to local drive

Hello!

I had a bit strange problem.. I have added folder to exchange files between my Mac drive and Windows server.
The folder is set in Connection settings as: /Users/piotrpaluszek/Documents/RDP.
The problem occurs when I'm copying some file from Windows disk to the shared folder above. The file time stamp is automatically changed somehow to August 2011. See attached screenshot for your reference. Not sure if I configured something wrongly or it's a bug.

Thanks in advance!