When sending files to translators, include not only the FLA file but also the folders for the XML files and the XML file for each language.
Translators can either work directly in the language columns in the Strings panel or work in the XML files for each language to translate the FLA file to selected languages. If you translate directly in the XML file, you must either import the XML file to the Strings panel or save it in the default directory for that language.
Translate text in the Strings panel
Translate text in an XML file