MorningStar
Seven, Seven--
How long does it take to empty the void? One of my villagers moved out recently and I'm scared if I do trades on that town someone might end up picking him up without wanting to.
To my knowledge, it'll clear your void if you visit a town that has ten villagers. If one is in boxes it doesn't count; I had a friend come to get Stitches from me when he was my 10th and I got one of his voided villagers the next day. If you have ten and none are moving, someone can come to you to clear their void, and vice versa.