Importing Question

We recently had a server which got renamed and an IP address change.

We are using the Hosts file to point the workstations to the proper
Inventory servers and have modified the workstations accessing that
server to point to the correct IP address. Unregistered the workstations,
put the latest 4.9 client, etc. onto the workstations.

However, the workstations are still not importing. I know the issue is
that the old Server IP address and Name are sitting in the registery, but
I can't remember where it is located. Does anyone have any suggestion as
to were I can look in the registry for this?

Thanks