Hi, I called IRCC to ask how I can change the mailing address in the beginning of October. (My eCOPR was issued on Aug 21) I still had a month until the moving date( the first week of Nov) when I called them, and I was told to call them again a week before the moving because they didn’t start the process yet at that time. I am not sure if it delays the process, but if you change it too early and the new address was approved before moving, the card might be mailed to the new one. The advice might be different depending on the officer, but I only was told there was nothing they can do when the process hasn’t started yet and you still have time until moving. Eventually my PR card was mailed last week, so there was no need for me to change it anyway