This might surprise you Oscar... it's a serious question...
When you shipped off your I-129F, you sent a boat-load of stuff. The thinking at the time was that this would shave off the time it would take to get your Warsaw interview.
I am curious now that you are there if this worked for you? And is it something that happens automatically? Or are you having to do something extra now?
It won't help me, because I'm already in the process. But if your methodology does actually save time, I think the other guys will be very interested.
What's your next step, and how did having all of that information help you get there?