I did a test upgrade of Vault+Dragnet, but ended up with a few duplicate or similar usernames which I can only hide, not remove. I had one user with a duplicate username and a couple where Vault and Dragnet must have disagreed on the login (one had Malcolm, one had Mal for example).
Everything *seemed* to work when I just updated using the Vault database, but before I go for it on the live database I thought it would be worth checking...

Cheers.
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Marcus
(Upgrade method: used SQL 2005 to do a backup, copied the backup file(s) to the VMware test server and restored it/them into SQL. Installed Fortress from there)