I recently obtained the PR (when I applied I was using the passport of country A). I am a citizen of country A. and now I have acquired passport of country B. However, country A doesn't allow duel citizenship. so if I am using passport of country B to go to country A, the passport of country A will be invalid. If I decide to use the passport of country B from now on, should I make any update to inform CIC the change of my citizenship?