title: aws appsync connection does not bring back items from all models
body: <p>I created a schema using the amplify cli and everything works as expected. The problem is when i try to perform a query on the events model it brings back comments as being null even though the event has comments. What confuses me more is when i query the comments alone they bring back their respective events but same thing does not work when i query for events. <strong>This is my schema below:</strong></p>
  
  <pre><code>  type Event @model {
    id: ID!
    title: String!
    latitude: Float!
    longitude: Float!
    startDate: String!
    endDate: String!
    description: String!
    coverUrl: String!
    locationName: String!
    Owner: User! @connection
    attendies: [User!] @connection
    photos: [Photo]
    organization: Organization
    comments: [Comment] @connection
  }
  
  
  
  type Comment @model {
    id: ID!
    user: User! @connection
    event: Event! @connection
    text: String!
  }
  </code></pre>
  
  <p>The queries i performed are: </p>
  
  <p><strong>List Events</strong></p>
  
  <pre><code>query listEvents {
    listEvents {
      items {
        title
        Owner {
          username
        }
        comments {
          items{
            text
          }
        }
      }
    }
  }
  </code></pre>
  
  <p><strong>which brings back:</strong> </p>
  
  <pre><code>{
    "data": {
      "listEvents": {
        "items": [
          {
            "title": "second Event",
            "Owner": {
              "username": "likono"
            },
            "comments": {
              "items": []
            }
          }
        ]
      }
    }
  }
  </code></pre>
  
  <p><strong>and List Comments</strong></p>
  
  <pre><code>query listComment{
    listComments{
      items{
        text
        event {
          title
          id
        }
      }
    }
  }
  </code></pre>
  
  <p><strong>which brings back</strong></p>
  
  <pre><code>{
    "data": {
      "listComments": {
        "items": [
          {
            "text": "Second Comment Same User Same Event",
            "event": {
              "title": "second Event",
              "id": "8bd6656b-b307-4e8f-ba65-84f75a4c2298"
            }
          }
        ]
      }
    }
  }
  </code></pre>
  
  <p>Any help will be appreciated. Thanks.</p>