I had a Residential address and a Mailing address for all 3 applications during submission, and these are 2 separate addresses in 2 different cities in Ontario. A family home in one city were my elderly relatives live, and my current address were my nuclear family reside. Both addresses were updated on CIC client site for the 2 applications that the cards are received, with only the residential address updated for the application still pending delivery. Strangely, the 2 received cards were sent one to residential, and the other to the mailing address. We have been monitoring both addresses since but no sign of the 3rd card so far.