With getfacl and setfacl your are able to backup and restore file permissions. This can be very helpful if you forgot to cp, tar or rsync them.
To backup use getfacl:
root@host:/some/location# getfacl -R * > /path/to/backupfile.acl
And setfacl to restore them:
root@host:/new/location# setfacl --restore=/path/to/backupfile.acl
simple as it is.