Members can sign informed consent for us to release the document, but it still doesn't remove my responsibility to review the file entirely for any third party information and to make sure that there is no third party information in the file when I transfer it to Veteran Affairs Canada. But I would have that member's informed consent.
It's important to remember that informed consent provided today does not necessarily mean I have their informed consent the next day. As you said, a member could remove informed consent, so we have to be careful. Signing a form as you leave on a deployment does not necessarily mean you consent when you come back from a deployment.