I don't think the Stand Down rule applies if they are scratched prior to acceptance time. There is usually a $40 charge for a "look' if you withdraw your nomination prior to closure of acceptances. When you move into fields , then its stand down or vets etc if the horse is scratched. The Barrier draw for the Kilmore Cup is PBD/$L4 and that information for each horse is available on the Noms . Both of those horses would have high $L4 so maybe connections decided to pass .