Mobile homes with AD Users

Hi all. Leopard server OD is integrated in our AD domain. Users are configured in AD and their home folder is on the Leopard server. All works fine so far. I want that the AD users (Mac clients) get mobile accounts: When they are in the office they work from the server, when they are out they user the local copy, when they are in the office again in synchronizes. Since I cannot edit AD information from my Mac server I configured OD groups like the Bombich guide says and add the AD users to that group. Now I want to manage the group and specifically that they are mobile users. That doesn't work. - When they log in they are not being asked to create a mobile home - When I make a group with OD users it does work, so it can be configured per group - When I tell the AD plugin to use a mobile home it creates one locally but that doesn't synchronise with the server How can a set this one up?