Server migration - updating Replica Tree?

Dear All,
I've just moved our server to a new location and new IP, and have made all the neccessary changes (dns, etc) to get all functioning fine and connected to the web - but now that I'm onto network configuration, I see that the IP/hostname entry in the Server Administrator's "Open Directory/General/replica tree" tab are still the old ones. Is there any easy way to change this - without losing user information?

Answering my own question again. The 'usual' linux way of removing old replica addresses is to use "slapconfig -removereplica xx.xx.xx.xxx", but Leopard's binding LAPD to the passwords directory (managed by Workgroup Manager) makes doing this without further authentification impossible.
My problem was twofold because after we had moved our server from one place/IP to another, someone forgot to rebuild Open Directory, so I had to find all instances of our old IP address within and replace it with the new one. The server was still operating till then thanks to DNS lookups, but the extra lookup time when OD came to the inactive old addresses probably slowed things down.
Caution: for one not familiar with the workings of Open Directory, this is not a task easy for the queasy. Read everything below before trying anything.
So we have to use Workgroup Manager. Login as the Directory Administrator, then go to Preferences and activate the 'Show "All Records" tab and inspector. A 'target' tab should appear.
In the drop-down menu just underneath the (selected) target tab, select 'Config'. Inspect everything in the lefthand column for traces of your old IP/Hostname and remove/update them - I found entries in both XML files under 'Kerberos Client', on the top-level (appearing to the right); ;in both XML files under 'ldapreplicas'; towards the bottom of both XML files under 'macosxodconfig'; on the top-level under 'password' server, but pay particular attention to the entries in both XML files there - not only do you have to update the old IP addresses there, you have to ensure that the DNS <key> (under <dict>) in both reflect the actual hostname. Of course you have to hit save after every modification above.
======
I took my depart from the this piece of advice - but as I am NO Open Directory expert, and I am not sure of the importance of the XML files modified above (I get the impression that a few are just preferences that will be re-generated anyways), I would still appreciate any advice or critiques about the steps above - It worked for me until now (the old IP/hostnames are gone and lookups seem to have quickened), but I do not want to mislead anyone reading this.
Thanks, best.

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Standard port configuration
interface FastEthernet0/7
switchport access vlan 96
switchport mode access
switchport nonegotiate
switchport voice vlan 192
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switchport port-security
switchport port-security aging time 1
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storm-control multicast level bps 1m
storm-control action shutdown
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interface Vlan96
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http://blogs.technet.com/b/teamdhcp/archive/2014/02/26/dhcp-failover-patch-to-address-a-reservation-issue-and-another-issue-related-to-failover-partner-not-accepting-state-transition-from-bad-address-gt-active-has-been-released.aspx
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