I have a question that goes along with this topic (sorry I'm a beginner so I don't have anything helpful to add here). I previously (last year) caught bees in a swarm trap. I moved them to a hive soon after, but as you mentioned, they built comb in the wrong place and it got messed up during the move. They moved out of the hive almost immediately after, but I found the swarm in a nearby tree. I was told to put the queen excluder at the bottom of the hive next time so she was forced to stay. I did, put them back in the hive, and left the excluder there for several weeks. When I removed it 3 weeks after rehoming them, they all left again immediately. How long should that queen excluder be left in place after rehoming? Any thoughts on this would be appreciated. And thanks for advice in the post above - I ran into the same issue.