one of our customers are going to migrate from eDir to AD and thus I have a few questions about how to add the AD as a second user source in ZCM.

The most important thing will be to not hassle users with an additional login prompt. That's why I'm asking you whether it's needed to add the two registry keys EnableSeamlessLogin and DefaultRealm on the clients or whether they will authenticate seamlessly to eDir from HKLM\Software\Novell\ZCM\ZenLgn\History CachedUserZenNames & RealmName.

The goal is to add AD as a second user source while not altering the user login experience and to be able to remove eDir user source in the future. I guess we will need to transfer any eDir user assigned bundles/policies to the corresponding AD user objects before ultimately removing the eDir user source, right?