AGIC doesnt work if ingress is already there

[karyatech-github]

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Describe the bug I have a AKS cluster with Kubernets Ingress resources already deployed. When I enable Application Gateway in the portal, it doesnt read the existing ingress rules and the application gateway is empty without any listeners, etc. It refreshes only when I re-add the ingress.

To Reproduce Steps to reproduce the behavior: (1) Create a new AKS and apply this YAML - https://raw.githubusercontent.com/Azure/application-gateway-kubernetes-ingress/master/docs/examples/aspnetapp.yaml (2) Enable APPGW in the portal (the checkbox). (3) After 15-20 minutes check the APPGW rules, it will be empty.