I’m not using a Kona 3 card, but I’ve been successful telling my editor to export out of his FCP timeline (quicktime movie using current settings, which are DVCPROHD 720p24), then:
I import those clips into After Effects.
Go to File–>Project Settings
Check the box that reads “Match Legacy After Effects Quicktime Gamma Adjustments”
Then I do my thing in AE. Render out at DVCPROHD (but animation has worked just as well here for me, your choice) Give the clip to my editor.
I had the same “washed out” gamma shift (and people went from looking warm-toned to sunburnt), but since I checked off the Match Legacy settings the clips I give him are absolutely seamless.