Bed Bug Eggs
Bed bug eggs are glued in place and bed bugs can hold on surprisingly well opposite a vacuum. Based on field experience it is doubtful that a significant amount of eggs would be successfully removed by vacuuming.
But it is beneficial to use a vacuum to remove as many crawling bed bugs as possible as part of your bed bug management. Also bedbug eggs are difficult to see or find unless you have a large infestation. You might have better luck using a steamer.