So earlier I was accepted into a PG certificate program in cyber security at York University, I applied for my visa on the same and it got approved and I got the vida stamping done as well. But later on, I was offered Masters in Information Systems & Technology at the same university with the same DLI number, and I want to go for Masters. What should I do now and how I can inform IRCC about it and will it raise any questions by the CBSA? As i would also have to request withdrawal from the PG course and ask for a refund, would it affect anything?