This probably explains why Moore is willing to work with the current KC scouting staff. From BP:
Scouting Director: Deric Ladnier. Ladnier played seven years in the Royals system and then spent nine years in the Atlanta front office (where he worked with new GM Dayton Moore) where he advanced from area scout to farm director. He was hired as the Royals scouting director in 2001 and is overseeing his sixth draft in Kansas City. His first draft was a debacle, as the Royals selected way-to-raw fireballer Colt Griffin in the first round and outfielder Roscoe Crosby, who got paid without having ever played a game, in the second round. Ladnier's made up for it since with some solid drafts at the top over the past three years, though tight budgets often limited his flexibility after the first few rounds. When I think of people to blame for the Royals' miserable state, Ladnier isn't near the top of the list.
Atlanta may not have seriously scouted the players the Royals are considering, given the draft positions, so it may be a case where Moore doesn't feel like he knows enough to overrule his scouting director, especially if it's a guy he's comfortable with in the first place. He'll probably go with their pick as long as it meets the signability concerns, whatever they are.