Help:Extension:Translate/Group management

After configuring groups they must be synced. This means that definition texts are indexed and needed caches are populated. For new style groups head to Special:ManageMessageGroups and rebuild (import) all languages. For old style groups use sync-group.php. This script also works for new style message groups, but you still need to use Special:ManageMessageGroups to build the caches. Importing messages can be slow and with the script you can easily do it in one command.

After any changes to messages you need to run createMessageIndex.php to create a mapping from message keys to message groups. It is a good idea to automate this command in a way that is suitable for your workflow.

For new style message groups you can use Special:ManageMessageGroups to handle fuzzying. For old style message groups you need to track the changes manually and use fuzzy.php to mark translations as in need of update.