A swarm re-sets their position so they don't return home. Some foragers are caught up in swarms - you see a few bees on a clustered swarm with pollen in their corbiculae, for example. Although some of the older bees might fly back to the old site - are there any references on that? If they don't, there must be some chemical message that acts as a re-set or the act of the buzzing run that occurs before the swarm sets off from the hive, is part of the re-set? Although I don't recall having to do it, a swarm can be re-located a day or two after it has been hived, I understand. Has anyone tried this?
May your bees read the same books as you do.