Both the backup file and SWF will be overwritten if they exist.Replacement can only be done if the new SWF filesize is smaller or equal to the old SWF filesize.

• 无论备份文件和瑞士法郎被覆盖；如果它们存在.；更换才能做；如果新瑞士法郎文件大小小于或等于旧瑞士法郎文件大小