I'm not following the conversation too well...
You've got bees that setup a working hive inside a honeyjar???
and you've got 2 other hives that were swarm captures?
Sounds like the stronger is robbing the weaker? If so, use entrance reducer and setup an internal feeder on the weaker one.
As far as the migration issue, I'm not understanging too well. Is this just loose robber bees you're trying to get to integrate into an existing hive? If so, it'll never happen.
I've been keeping a few hives for the past 20-25 years, and no longer treatment free as I got tired of the losses.