Incredibly, that's actually the reason they're going with
Three military officials told the Times that “one reason behind the change was that the Trump administration decided to remove four service members killed this past weekend from the list … because their deaths occurred after President Trump declared a cease-fire in the war in April”.
Well, that's "one reason," I guess? What are the other ones and who made this decision? Who knows because this administration won't tell us anything and lies over half the time it does say something anyway, so just infer the worst.
Really? Given how I've seen the US military conduct itself in my lifetime I find that very easy to believe. They'd never get bullied by a human rights advocate or an academic or most civilians, but they've been rolling over for right wing ghouls and dipshits for over twenty years.