Not sure why you would make the field dominance none? 1080 25psf is a progressive image wrapped in a 50i frame. When I work in this format from HDCam, I leave everything as 50i and have no trouble playing out to HDCam.
That said, there are settings on the HDCam decks for 50i and 25psf. I presume the Kona is output 50i, so try that setting on the deck first. Are you getting funny green colored blocks on playback but EE looks OK? If so it is the psf versus i setting on the deck.