EnvoyFilter to remove application protocols from filter chain match

Config
1

I am trying to remove the application_protocols[ ] from the filter_chain_match in one of the side car outbound listeners.

apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: my-app-filter
  namespace: bxp
spec:
  workloadSelector:
    labels:
      AE_DEPLOYMENT_ID: my-app
  configPatches:
  - applyTo: LISTENER
    match:
      listener:
        portNumber: 21456
        filterChain:
          transportProtocol: "raw_buffer"
          applicationProtocols: "http/1.0,http/1.1,h2c"
    patch:
      operation: MERGE
      value:
        filter_chains:
          - filter_chain_match:
              transportProtocol: "raw_buffer"
              application_protocols: []
        listener_filters: []

I doesn’t modify the existing entry but creates a new filter_chain_match with the given config.