Moving Duck Eggs?

I have a big pond with a male and female duck. There used to be two females, but I have not seen her in two days. I found a nest with 3 eggs in it yesterday and 4 today so it must be the female's that is still here. I also found two eggs that were laid in the pond and read online that they can be very resilient before the incubation period starts and that if an egg is laid in water it can still survive if taken out. Should I take the two eggs out and put them in the nest? Or should I just leave them alone?