In "Kernel Storage", the "Force Delete" (in the right-click menu) runs with high privilege possible, so I can delete protected files. However, the "CopyTo..." function (in the right-click menu) does not use high privilege.
When trying to copy the backup of a force-deleted protected file back to its original place, I got a fail of "You don't have permission to save in this location.", meaning that this does not run with high privilege as "Force Delete" does.
In "Kernel Storage", the "Force Delete" (in the right-click menu) runs with high privilege possible, so I can delete protected files. However, the "CopyTo..." function (in the right-click menu) does not use high privilege. When trying to copy the backup of a force-deleted protected file back to its original place, I got a fail of "You don't have permission to save in this location.", meaning that this does not run with high privilege as "Force Delete" does.