Forum:I cant get my NPC's to respawn

So I was trying to move my NPC's into another part of my house about a week or 2 ago and i summoned eye of cthulu to kill them off. while they were dead i removed the sources of light from there rooms so they would spawn elsewhere. there are dozens of other available rooms for them to move into that meet specifications but they still wont respawn. As of now, i have the merchant and demolitionist but nobody else. not even the guide. did I herp and derp or is something glitchy?