Settings for different environment don't transform correctly

I have a Development and Staging setup. For some business reasons, I'd like to disable certain features entirely, while enable them with predefined criteria for other environments.

For example, my appsettings.json file may have something like this

"FeatureManagement": {
    "FeatureA": {
      "EnabledFor": [
        {
          "Name": "ProductPlan",
          "Parameters": {
            "AllowedPlans": [
              "Developer",
              "Production",
              "Enterprise"
            ]
          }
        }
      ]
    }
  }

However, I'd like entirely disable this for my Staging configuration.
In my appsettings.Staging.json I would like to completely disable the feature

"FeatureManagement": {
    "FeatureA": false
  }

It appears that this is not possible. I also tried specifying different subset in the AllowedPlans, but that didn't work either - the environment specific settings file was never processed.
Other settings in it work fine.

Is this an expected behavior? Any help would be appreciated. Thanks

Start by reproducing the configuration described with appsettings.json and appsettings.Staging.json, focusing on the FeatureManagement section and the FeatureA shape change. Trace how the environment-specific file is processed and merged, then verify whether the staging value is honored and whether the AllowedPlans override behaves as expected.