Hello. I will be migrating cuc 8.6.2 to 10.5, two separate servers. Same exchange backend, the 8.6.2 is currently ad integrated. I plan on utilizing cobras briefcase mode to copy users to the new server, and will be doing this site by site, as the phones are moved. Im concerned that if I also Ad integrate the 10.5 server and sync, all my users will be there and have two mailboxes, one on each server. Do I not integrate the 10.5 server until all sites are migrated? If so, how do I handle new users for sites that have been migrated? Or do I integrate, but do not sync until all users are moved over?