I think it's a good move on the trainers part. The horse has 3 weeks to settle in. Shipping can be tough on a horse. He's pretty much going to be training on the same surface if he'd stayed in Cal. but perhaps the trainer was considering the weather change. I don't know how quickly he would get acclimated or if it would really make that big of a difference. I think the trainer just wants to near CHD if he decides to give the horse a work over the surface.