Restoring the changes we made to language strings/keys in Backend

Hello

We made changes to the language strings/keys in administration/advanced settings/language settings. 

We would like to restore that changes we made to the keys.

Where do we go to back the up the changes and restore the changes. Thanks.

well just make a new language and then import in it every thing you want .. set it as default and delete the old one (or keep it if you want it )