PR card renewal with PO Box Address - URGENT

[sushmet]

Hi,

I will be renewing my PR card soon. I will be moving from Present Address in month and half, but want to put application now.

So I wish to give PO Box address for correspondence. Will it create any problem? Will CIC be suspicious about my residency etc. ( I will submit the application as per norm) if I give PO Box address?

Please help.