Weirdness with SCG5

Hi.  I've had SCG5 up and running as a Hyper-V VM for a couple of years now, it's been fine.  We are doing some segmentation work on our network, so I put SCG5 in a new vlan.  I used the yast tool to change the IP address, subnet mask and default gateway of SCG5, that all went fine, SCG5 was pingable afterwards. and the web interface on port 5700 was working.  But I noticed something weird in my firewall logs.  With the SCG5 VM running, the firewall traffic from SCG5 is just it talking to our internal DNS servers and some Dell IP addresses.  But once I log into the web interface, I see SCG5 trying to make an SSH connection to its old IP address, which does not exist any longer.  And the firewall is denying it all.  Why is SCG5 doing this?