technically yes it must be returned to your mailing address, but I would keep an eye on both addresses incase something shows up. also keep in mind that if u look at January SS. some end of January applicants received AOR last week, so I would say there is still way more hope.How long they take to return application ? It been 56 day since they have received my application. No AOR and no return application . I provided 2 different addresses , my mailing address is different from my residential address . In case if they have to return my application, they will return on mailing address ... correct ?
and if you don't receive your application in 10 days from now. then for sure its under process and just matter of time.
I hope you have sent your application with tracking and signature, because in the forum we did hear cases where the application was never received at IRCC.