You can mark a pokemon (the circle/square/etc.) to denote things. There are 6 spots, and 6 IVs, so many mark a spot if it has a full IV. For example, on the raikou, I'd mark the 3rd, 5th, and 6th slots. I'd also probably give it a miracle seed or something (to denote HP Grass) and teach it HP, and since I'm putting it aside to EV train w/ HP on it, I'll probably assume it has HP 70 later on.
And no, I didn't keep copies of your pokemon (except tyrogue just in case). I probably have comprable pokemon. Where they flawless too?
Thanks for trading! If you ever get any other cool events (wish events, or RNGed things), I'd love to trade for them!