真为你遗憾. 材料更新从FN信开始就强调了, 尤其是家庭成员变化. 随体检一起的免面试通知中又强调一回(Should you need to advise us of a significant change in your application such as a change in your address or family composition), 取签信上再强调一回(Highlighted on PL that you must report to this office in writing any changes in your family configuration before collecting your visa), 取签时又强调一回, 以免登陆前家庭结构再发生变化. CIC在这个问题上的处理是无可厚非的.
我只是为你遗憾. 换言之, 即使你成功登陆以后再办理团聚移民, 除非你改变孩子出生日期, 否则你的永久居民资格也可能被取消. 这是我个人的看法, 既然已经拒签, 理由又那么简单, 申诉也不回成功的. 从头再来吧.