Dang, that is fast! Congrats again! I am so curious how you ended up being forwarded to CPC-M, as you are literally the only Vienna person I have ever seen sent there! I know that figuring this out is not your biggest concern at the moment (ha), but I would be interested to know if the sponsor is living in Canada in your case? And/or did you fulfill the relationship requirements that meant you didn't have to provide additional proof of the relationship? (i.e. the section about whether you had been married over 2 years, had a child, etc). Doesn't make a difference to my case since it's already been sent to Vienna, but I am a nerd about figuring out these puzzles nonetheless.
As to the photos, I have no experience with that (yet), so I would just abide by whatever the instructions say, even if it seems like overkill. It's just a guess, but I would imagine the photos in your original package are meant for the PR card itself, so maybe these ones are related to the COPR paperwork/visa only....