Nginx Ingress Controller version upgrade + NLB involved

I would like to know about Nginx ingress controller for K8s with NLB(AWS). Recently we upgraded the controller with Nginx latest version. Did the kubectl -f apply, configurations got updated. But the service shows age as old days. So in case, we delete the svc of ingress controller, will the AWS nlb gets removed and when we apply the new configuration, a new nlb will get created ?

Please help to clarify on urgent basis.