My worry is that if you catch a cast swarm and add a QX to the bottom then you would be stopping her mating.....this would be a big issue.I my experence - No, but as always in these matters someone may have another experience. The new queen hatches and then leaves with a small quantity of bees. Thats why it's important to remove all but 1 cell if your hive swarms. If you leave more than 1, then there is a risk that the hive will cast swarm a week or so later when the new queens hatch.
Expect your queen to be laying in 2 to 3 weeks, if the weather allows for mating flights.
thanks Mission, I need to remove the QX mind? they have been in the hive for 2 days now with the queen locked in.Jezd, I always make sure they have new, fresh foundation to play with and then leave them alone for at least 2 to 3 weeks. I try not to disturb them and up to press I haven't lost a single swarm.
Once they are in - leave them to feel at home. Once they are happy, then they will stay.