The consent is only for obtaining GCMS notes once, and cannot be re-used. Further, the consent of only for GCMS notes, and doe snot impact your application. As in through the consent form, the person whom you have given consent to, cannot make any decisions or represent you in your application processing.
The consent is given pursuant to the Access to Information Act. Which is a different law. The application processing is under under the IRPA.
If an entity is compliance with the PIDEPA, which is the Canadian Privacy laws, - all entities in Canada who deal with personal information have to be, you need not worry. GET GCMS is compliant with PIDEPA and a Canadian entity. For more details, you can contact them directly.