NTFS data lost when read on Mac OS X Mountain Lion

I am having external disk with NTFS and using Mac OS X Mountain Lion to work with the data inside the disk.

However I encountered problems when working with those data in Mac, somehow the data inside several directories on NTFS disk are lost.

The data lost was not because it was deleted, the data just lost directly when it was opened on the mac.

From the Mac's Finder, it is said that the size of the directories were zero bytes.

When I connected the disk to windows machine after that then it keep showing 0 byte. The data was lost permanently just after I opened it from Mac - the data was there previously before I openned it in Mac, but right now it's gone.

It's happened two times on different NTFS disks, it seems that Mac OS X deleted those files on NTFS disks.

Has anyone here encounterred the same problems like I did?

How to prevent it from deleting NTFS data again?

Is there any way how to recover those lost NTFS data?