I guess this is what a cut-down split is. I saw queen cells, one of them capped, the rest at various stages. Sometimes I get lucky and find the queen. I moved her, open brood, and honey and pollen to a new location. I left the queen cells at the old, removed all but the best looking one, and all the capped brood. I didn't get a chance to look in until today, when I expected the queen to be close to be on mating flights. I looked anyway, found the cell had hatched out, the cap was opened up. It was getting stormy looking and it appeared all the bees were home and there were lots of them. I also found half a dozen of capped queen cells I missed previously. I did not get lucky in finding the new queen.
Past experience says that even though I've read the first one hatches out and is supposed to kill the rest, they will swarm several times. With as many as these bees, it is likely they will think they can swarm. I cut out all but one cell. I might have missed some in the mass. Any suggestions at this point?