Extended language maintenance is currently activated. Refreshing the languages loads all language data from the ILIAS language files into the database. Local changes saved in the database before ILIAS 3.10.0 may be overwritten, if not exported before. This does not affect any "*.lang.local" files in the Customizing directory. Local changes saved with ILIAS 3.10.0 or higher are kept, if they are newer than the modification date of the local language file.