Overwrite file and apply file system rights of overwritten files?

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http://unix.stackexchange.com – I backed up some linux configuration files to a windows machine, so the file system rights were lost. Now I would like to restore my backed up configuration by overwriting the configuration currently present on the linux machine. Is there a command like "overwrite configuration.conf with backup/configuration.conf and apply the file rights of the overwritten configuration.conf to the new configuration.conf" ? Thanks for any hint :-) (HowTos)