Ip Address for .COM.AU nameserver not showing up in WHOIS

[Dr. Phibes]

I've recently redelegated my domain to a set of .COM.AU nameservers and I've noticed that OPENSRS WHOIS does not show the IP address next to each nameserver, whereas when I was using my previous .NET nameserver it automatically listed the IP address.

eg. It used to show

soapmanufacturingplant.com

Domain servers in listed order:
NS13.VOSN.NET 209.151.74.1
NS14.VOSN.NET 209.151.74.2

Now it shows

packagingline.com

Domain servers in listed order:
NS1.WEBSALES.COM.AU
NS2.WEBSALES.COM.AU

Q1. Will this make any difference to the correct operation of the domain?

Q2. Is there something my .au registrar should do so that the OPENSRS system picks up the IP address correctly?