Refer to my answer posted earlier. Be sure that the embassy DOES NOT issue the visa for the date already passed. They always ask for the deferral letter to issue the visa with the date corresponding to your revised admission letter/deferral letter. In gour case, the visa shall be issued for sept 2015. Hope that helps.
Yes but how are they going to change the date when they have not even asked about my deferral admission letter? I will be giving the medical soon but I have not received any reply from CIC after I told them about my deferred admission.
Is it something they will ask while sending them the passport? when and how will they ask about my deferred admission?