This would have been a good HTT, but I was at the office yesterday and could not post.
I am part of a yahoo group for a local Korean adoption agency. Some of the people in that group are discussing the grieving process that their children go through when they come home. In case you don't know, Korean babies are placed in foster care until they travel to their adoptive parents' home. In many cases, they cannot come home until they are 10-12 months old. Several people in my yahoo group talk about how the babies cry and cry. One family said that their baby cried until she threw up. Another said that their daughter was actually calling out for her foster mom.
I guess this type of grieving could happen in either IA or DA. Have you thought about this at all? If you are adopting an older infant or child, how do you plan to help them through this separation anxiety?