I've seen ones for sale that have bee escapes in them too, so you can block off the top entrance and allow the foragers to return home (while not allowing others to leave) before you move them.
I'd love to see plans for those, if available. The only options I've seen is using a normal mechanical bee escape and taping it to a robbing screen, or poking cone holes in a pre-existing robber screen, neither of which I'm fond of.
Well, that and paying someone $12 to make a $0.90 part.