I would second the recommendation to remove the feeder and look for bees carrying pollen in. If they are, then wait a couple more days (or until you have a hive ready

) then go back after dark and take the trap to the new hive. I always hive them the night I take down the trap. That has greatly reduced absconding for me. I use top bars in my traps and just transfer the bars with comb full of bees to a TBH. (Not sure of your setup.)
Then definitely add new frames or bars to the trap and set it back up. I caught 3 swarms each from the same 2 trees (6 swarms total from 2 trees) last spring in quick succession. And you might add a few more traps to the area. It seems very productive, especially if a lot of brush is being cleared nearby which is forcing bees to move.
Keep fishing when they are biting, and use as many rods as you can!!
