Agents not updating IP address

 

I am using MetaTester 5 Agents Manager Build 2015 which is currently the latest. Recently I changed my Internet Service Provider but somehow, a few of my agents are still linked to the old IP address. How can the new IP address from the new Internet Service Provider be propagated?

Is it a matter of deleting agents from the website/cloud and adding them afresh? Please help. Below shows the different IP addresses with the old one being 196.207.161.35.