I agree but when swapping with dummy eggs, won't they be more inclined to use the current loft floor itself as the preffered nesting area ?Yes they certainly will build a new nest and lay new eggs. If you constantly pull the eggs after they are laid you can deplete the hen of her calcium resources, and it could be detrimental to her health, as she will continue to lay eggs every 7/10 days.
It's best to substitute dummy/fake eggs and let them sit for the normal incubation period. When they realize the eggs are not going to hatch in approx 18/23 days they will abandon the nest, and lay new eggs. Just continue the same process of substituting the dummy eggs and your birds will stay happy and healthy.