Thanks aidina for your replay.aidina said:Nothing. You could choose either one.
But I had contacted with a lawyer and he told me that the CIO will automatically forward your application to CCP Ottawa even you select your regional visa office as you already live in Canada and your study permit still valid for 2 years.
Do you have an idea, if this right or not. As I don't know that I should select the CCP instead of the regional visa office.