Have been using Account Manager 2.1 which is based on dirXML but which
version? Don't know if it is like dirXML1.1a. Finally forced to upgrade
as Vista Client does not support the password sync. to AD. Would have
done earlier but never did understand the relationship and upgrade path.
Syncing of users and passwords has been going fine all of these years -
7 I think.

Could uninstall Account Manager and then install Identity Manager 3.5.1
Bundle Edition. Would it then be easy to match existing users in both AD
and eDir? The doco on Account Manager CD says uninstallation will remove
Forest Items and drivers from eDir.

Documentation says something about updating dirXML 1.1a drivers after
installation of Identity Manager. Would this be a better path?