I re-read this book recently. I find something mysterious and even contradictory -- Airl was able to leave her "doll body" and return to the collective in the asteroid belt. Yet, she claimed that the battalion was caught in the death traps and they are still seeking out these individuals...
Do you see a problem here? How was Airl able to escape the death trap? I think that needs some explanation.
I think we also have to presume that The Domain may not be sharing all they know -- for whatever reasons, be that strategic or otherwise.
I saw the same inconsistency when I read the book. I think the Domain should be RVd more thoroughly before we agree to have any dealings with them. Also Elena Danaan (Author of A gift from the stars) believes that the Domain is the Nebu - part of the ET races who are keeping the humans enslaved.