After receiving ITA I am in a process to apply for a PR visa to Canada. During last 10 years I had three passports. First one was expired so I needed to make a new one. The second one became invalid because I received a citizenship of a new country. I have the latest two passports with me but I do not the first one. I destroyed it completely myself. However, I made some travel from that Old passport. Now I am reading on the thread that Old passport might be required. Can someone suggest me what can I do in this situation?