Comment to 'Language Translation - Is this a mistake in Russian module ?'
    1. Yes, it is the one from the steps to use the proper language. Only the user's choice has higher priority.
    2. Yes, it will if the module contains the some upgraded parts. As usually, you need to have the actual backup before the upgrade.
    3. It's better to download your module locally because the UNA upgrade is sensitive to the non-usual files in the whole UNA's directory. I mean if you will have the file zm.php in the root of UNA - the upgrade will notice that.