MBPs do not see new SUS URL

Not applicable

My JSS with SUS ran in a local Network with no Public Static IP until recently.

I am running latest JSS on a 2009 silverwhite MacMini with 10.6.8 Server the Public Static IP points to a subdomain.

When I amended the Network Setup, I connected the Public Static IP Address to the Built-in LAN Port and connect to my local Network via a USB2Ethernet Adapter.

Since then I connected the MBPs via Wire and ran an Inventory, believing that the new SUS Details would be pushed across noting the Public IP or SubDomain Address as new SUS Address.

But it doesn't!

And since I can't find anywhere an Option/Line that shows the old IP for the internal Network Address, so that I could replace it with the new Public IP - I am sort of lost...