While several deployments are already on eDirectory 8.8 SP5, there are a few who are in the planning to move to eDirectory 88 SP5. They expressed that a best practices doc which provides do's & dont's would impact their planning purpose. In this regards, we have come up with this document to minimize the risk of data loss and interruption of directory service during upgrades.
This document is available at: http://www.novell.com/docrep/2009/10/eDir_Upgrade_Best_Practices_Sept2009_en.pdf
If you need to know the benefits of eDirectory 88 SP5, please go through: http://www.novell.com/communities/node/8886/benefits-edirectory-88sp5
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.