My impression from only the reading I have done, is that the brood in the box moved to the top of the hive,above a queen excluder,is too old for them to make into a queen.The brood has to be an egg or up to 3 days old and open.And because there is still plenty of queen scent in hive a worker would most likely not be trying to lay.Does this make sense?
I've Demareed a fair number of colonies and never (to my knowledge) accidentally formed a two queen colony or induced swarm cell formation. Am I missing something or just really lucky?
My cell building setup is similar to the Demaree swarm control method. Brood goes above an excluder, while old queen is below. I sort out the unsealed brood and that's what goes above. In about 20% of the cases, the bees start emergency queen cells, but never swarm cells.
Are you placing any open brood above the excluder, or just sealed?
I typically move the queen on into a lower box or boxes (mediums) containing either nothing but pollen, nectar or empty cells (preferred). The queen is given 1 or two frames of nurse bees to attend her. Sometimes I will see emergency cells, which I usually remove, but my stock is 25-50% Rus with a fair amount of Carniolan. It is common for me to see a high rate of queen cup building and succession (especially now that I am not using any hard chemicals for varroa control). I suppose succession might occur w/o my knowledge as not all of my queens are marked, and I rarely go back into the lower boxes once the queen is forced down.