Hi chris_uk perhaps you could try and keep all the info on the new ePO server if you follow the steps described at the disaster recovery procedure:
Thanks for the response.
Do you know if there is a way in 4.5 to export the tree structure and IP details (held within the sorting criteria) to import into 4.5 held on a new system?, as this would solve the problem I am having.
Thanks in advance.
I don't believe there is, no, sorry - you can export the tree structure, but not the IP sorting rules.
Try to replica your systemfirst in a VM before applying it on the production.