Ocelot SignalR -> Cookies not sent to endpoint

  {
    "DownstreamPathTemplate": "/hubs/{everything}",
    "UpstreamPathTemplate": "/CustomChat/hubs/{everything}",
    "UpstreamHttpMethod": [ "Get", "Post", "Delete", "Put", "Patch" ],
    "DownstreamScheme": "ws",
    "RequestHeadersToForward": [
      "Content-Type",
      "Authorization",
      "x-tenant-id",
      "x-site-id",
      "cache-control",
      "content-disposition",
      "Cookie"
    ],
    "DownstreamHostAndPorts": [
      {
        "Host": "localhost",
        "Port": 5502
      }
    ],
    "SwaggerKey": "CustomService",
    "EnableWebsockets": true,
    "PreserveRequestCookies": true,
    "AuthenticationOptions": {
      "AuthenticationProviderKey": "Bearer",
      "AllowedScopes": []
    },
    "UpstreamHeaderTransform": {
      "Cookie": "{Request.Cookies}"
    }
  }
],
"SwaggerEndPoints": [
  {
    "ReRouteKey": "CoreService",
    "Key": "CoreService",
    "Config": [
      {
        "Name": "Core Service API",
        "Version": "v1",
        "Url": "http://localhost:5500/openapi/v1.json"
      }
    ]

  },