This might helphttp://www.cic.gc.ca/english/resources/manuals/op/op24-eng.pdf
Once the CPC has made the initial determination of the PA's membership in this class, the appropriate visa office is
contacted for the processing of any overseas family members.
When the visa office has received the paper file from the CPC-V for any family members who are
to be assessed abroad for eligibility and admissibility, it will do the following:
• forward an Application for Permanent Residence in Canada [IMM 0008EGEN] to each family
member, with a time limit by which they must respond;
(In my case they contacted in 1 week after my AIP)
• open the appropriate file for each case;
(Just now Im waiting for this step)...
The application of the principal applicant in Canada cannot be finalized without the results of the
visa office processing of any family members residing abroad.
(So while CIC-V checking me, visa office will check my child).
You can find more useful information in this manual.