This is an upstream tracking issue to validate changes in downstream CCM caused by annotation "service.beta.kubernetes.io/aws-load-balancer-type" updates:
Issue: https://github.com/kubernetes/cloud-provider-aws/issues/1254
Fix; https://github.com/kubernetes/cloud-provider-aws/pull/1158 (included in 1.35: https://github.com/kubernetes/cloud-provider-aws/releases/tag/v1.35.0)

    TBD (tested in 1.34, but looks like it exists on controller for a while)

    always

    1. Create a Service type loadbalancer CLB (or NLB)
    2. Update/add the annotation service.beta.kubernetes.io/aws-load-balancer-type" to NLB (or CLB, different than creation)
    3. With the fix, the controller must return an error
    

A new load balancer is created and the old one is leak    

 Service not allow to update the load balancer type

Refereces to upstream issue: https://github.com/kubernetes/cloud-provider-aws/issues/1254
Similar issue in ingress: https://issues.redhat.com/browse/OCPBUGS-16728