Honestly, we stayed in Canada only for 6 months in total. We had to go back since our grandfather was alone in Pakistan with no one to take care of him, so our dad decided to leave everything and go back. Now we turned 18, and wanted to back to Canada so we can study. We applied to renewal while we were in Canada, and they sent us a letter that our file has been transferred to local office. At that point in time we were already in Pakistan. Im guessing they would call for an interview. Our grandfather was very sick (he is 85), and my dad was the only son there to take care of him. so yeah, anyways, the letter CIC sent stated that if you leave the country whiles its in process, to apply for TD.
Thats what we did, sent in all the passports, and told them there is a breach of residency, however, we have already appealed, and file is in process. We have bank accounts in Canada, and sent in copy of statements. Also, we sent in copies of licenses/sins/healthcards, etc.