Thank you very much for that clarity.
On the issue around how this happened and why it took so long.... One of the issues, as multiple students have said to me, is that through every step of the process, it was never caught: not when the application went in and not when they arrived here in Canada. It was not spotted by CBSA. It was not spotted when they applied for a work permit, for example. It was only in the final step, in many cases, when people were applying for permanent resident status, that this got caught.
My question is about measures to prevent this from happening again. Why is it that the government did not do the check on the documents at the front end? Instead, it's doing the check on what appears to me to be the back end.