Comment 3 for bug 209746

The cp command use umask permission by default, it seem logic that nautilus do the same thing. cp don't preserve chmod and chown by default.
This fake bug can be resolved by adding a new feature that purpose to preserve permissions, or by choosing new permissions on a Window before copy.
Example by adding a "Advanced paste" option in the menu, under the normal "Paste" option.

Advanced paste can be a Window that purpose to preserve or not permissions, or/and define new permission for files and for folders copied.
I think it's the best way to solve this problem...