Your groups may be deleted, so please use the backup function before you update your files.
You should ALWAYS use the backup function actually.
If your group was deleted, you can try to create the group with the same name manually and click the save button and see if it brought back the channels.
Use the "revert update" button.
You should ALWAYS use the backup function actually.
If your group was deleted, you can try to create the group with the same name manually and click the save button and see if it brought back the channels.
Use the "revert update" button.