They didn't use the printed photo in my case. They returned it to me with the client copy of CoPR. It doesn't make sense why they used the other (non printed) photo instead.One of the 2 photos needs to have the stamp and the details at the back. Difficult to understand the process as at the time of PPR we submitted 2 photos with the details on the back of one of the photos. And they stuck one photo on the COPR form.
And in a good number of cases, they are asking for photos to be resent. So the major reason may be the dimensions etc.