Hi Paul,
for LDAP migration you have to involve IBM Lab Services. They have special tool which do necessary steps directly in the database.
These tools are version specific, so you have to decide if do migration before or after upgrade.
The procedure is straitforward, I did it already 2 times in one Swiss company :-)
More complex will be probably to prepare LDAP itsels, migrate users groups and do the proper mapping where sometimes cuctom tools are need to build.
Regarding selection of LDAP it is really up to you / customer - see supported LDAP servers - ADLDS is simple, can be easily maintained, but, according me , it is not the enterprise tool and have not so comfortable management as some others. On the other hand can be managed also by API and microsoft scripting ..
BR
Pavel Silny
The Digital Content Professionals :-)
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Pavel Silny
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