so...
I debug my program and figure out interesting thing
1) move dir to new location
2) get FileAttributes.Mode form files (436)
3) set FileAttributes.Mode, FileAttributes.Uid, FileAttributes.Gid (everything OK, files has changed owner, group and same permission rights)
4) get FileAttributes.Mode form dir (509)
5) set FileAttributes.Mode, FileAttributes.Uid, FileAttributes.Gid (everything OK, dir has changed owner, group and same permission rights, but as I said he disappear
)
And what is the worst is that I don't know any way how to change it back
THX for ANY advice