Yes Rachel Actually once Mississauga transfer file in local office so after receive file they keep it few days in cold room or u can say Ur file waiting to get IO. after that IO send you u a letter and will say that they start work on Ur file and if they require any document he will ask to you .....
and as u said u both already have PR so i am sure Ur newly child will be get easily coz they not gonna ask for child relationship proof ha ha
and in child case if ever they have doubt they simply ask for DNA test which one easy and will be come possitive ...
so no worries i hope soon u will be hear and can start Ur life with husband and kids
all the best