Ultimate_One said:Ineed suggestions from multiple sources as answer by one person is not satisfactory where he himself says that it is not garunteed....
In the current EE, you are expected to provide all 100% of the required documents upfront along with your application. CSE is a means by which you can request CIC to add any missed out documents but they are obligated to add the document your file. There are cases where they have accepted the documents and have added them to the file and also provided acknowledgment. But that's not always the case. But you can give a try if you wish.