When you
COPY a file to a directory, the newly created file or copy takes on the permissions of the directory that it is in. If you
MOVE a file, then it takes is permissions with it. It also depends on whether or not you are moving from FAT to NTFS. You can go get a program called RRS from
Repliweb that will allow you copy files from one server to another and carry all the permissions. It is a 30 day trial version.