Nested aggregation issue

1 mapping

curl -XPUT localhost:9200/test -d '{
  "settings": {
    "index": {
      "number_of_shards": 1,
      "number_of_replicas": 0
    }
  },
  "mappings": {
    "test" : {
        "properties" : {
            "offers" : {
                "type" : "nested",
                "properties": {
                }
            }
        }
    }
  }
}
'

2 documents

curl -XPUT localhost:9200/test/test/1 -d '
{
  "name" : "foo",
  "offers" : [
    {
        "ID" : 1
    }
  ]
}
'


curl -XPUT localhost:9200/test/test/2 -d '
{
  "name" : "bar",
  "offers" : [
    {
        "ID" : 2
    }
  ]
}
'

curl -XPUT localhost:9200/test/test/3 -d '
{
  "name" : "baz",
  "offers" : [
    {
        "ID" : 1
    },  
    {
        "ID" : 2
    }
  ]
}
'

3 query

POST test/test/_search
{
   "size": 0,
   "query": {
      "filtered": {
         "query": {
            "match_all": {}
         },
         "filter": {
            "nested": {
               "path": "offers",
               "filter": {
                  "term": {
                     "offers.ID": 1
                  }
               }
            }
         }
      }
   },
   "aggregations": {
      "Attempt1": {
         "nested": {
            "path": "offers"
         },
         "aggs": {
            "ID": {
               "terms": {
                  "field": "offers.ID"
               }
            }
         }
      },
      "FilteredAttempt2": {
         "filter": {
            "nested": {
               "path": "offers",
               "filter": {
                  "term": {
                     "offers.ID": 1
                  }
               }
            }
         },
         "aggs": {
            "NestedID": {
               "nested": {
                  "path": "offers"
               },
               "aggs": {
                  "CatalogID": {
                     "terms": {
                        "field": "offers.ID"
                     }
                  }
               }
            }
         }
      }
   }
}