Please make sure to change filename and email subject as mentioned in letter. I have lost one month due to not changing the name of scanned file to my last name and application number. I got a final notice to submit the files otherwise my application will be abandoned. I was surprised that woooooooooo why they sent notice as i have already submitted passport online. Finally, a careful reading of requirement letter and final notice, I realized that IRCC want me to change the subject of reply email and filename.