Export autocompletion from Exchange Server to another Exchange server

Hi all, we are migrating our mail boxes from Hosted Exchange Servers (in ISP) to our own Exchange Server.

Problem is that when we are reconfiguring Outlook, we are loosing the autocompletion. Because we migrate from one Exchange server to another.

We don't manage the source server but only the destination server.

How can I export autocompletion from Outlook or Exchange Server to import it to Outlook or nex Server ?

Thanks.

David COURTEL
IT Technician
Wsus Third-Party Softwares Publishing : http://wsuspackagepublisher.codeplex.com