Spoke with Aeroplan and he updated the DOB on the booking but was unable to link it with my booking even after speaking with the ticketing team. He added a note on the child booking to say that he is travelling with me. The CS rep said that only Air Canada bookings can be linked together and not GF ones.

Is that what they did for you @escape4?

Also when I called up GF for seats they said that the child's DOB is not on the booking and its still showing as a Adult booking. Will that be a issue?