Terminal Service Mgr show’s real IP instead of natted ip

Hello,

I’ve got clients using RDP to a win2k3 box who’s real IPs are natted to 192.168.x.x but but when I look at at Term Services Mgr, I continue to see their real 172.x.x.x addresses. The IPs are being natted on a VPN router and the traffic is passing through a firewall. If I look at the connections on the firewall I see the natted address but at the terminal services screen I continue to see the real IPs. Is this a bug/feature in the Terminal Services? Thank you