Data in Elasticsearch but not in Kibana 4

An item in Kibana

{
            "_index": "ep-client-stats-staging-v2",
            "_type": "stats",
            "_id": "41bcc398-2298-4925-b0d4-6df13749a54f",
            "_score": 7.4639173,
            "_source": {
               "WhenAddedToEsBulkProcessor": "2014-12-16T01:19:51.448Z",
               "WhenPublishedToKafka": "2014-12-16T01:09:21.042196751Z",
               "When": "2014-12-16T01:09:21.168220861Z",
               "WhenConsumedFromKafka": "2014-12-16T01:09:21.146Z",
               "kafkaPublishToEsBulkMs": 630406,
               "HashKey": "00-11-22-33-44-56",
               "ID": "00-11-22-33-44-56",
               "KafkaPublishToConsumeMs": 104,
               "Topic": "ep-client-stats-staging",
               "Clients": [
                  {
                     "Rxbps": 1938,
                     "TxPkts": 127,
                     "Wlan": "wlan0",
                     "AvgRSSI": -38,
                     "TxFailed": 0,
                     "TxBytes": 45306,
                     "RxBitRate": 39,
                     "MAC": "18-87-96-f4-9d-50",
                     "RxPkts": 248,
                     "ConnectedTimeSec": 306,
                     "ARCStatus": 0,
                     "RSSI": -38,
                     "TxRetries": 46,
                     "InactiveTimeMilliSec": 240,
                     "Txbps": 2089,
                     "Rxpps": 1,
                     "Txpps": 1,
                     "RxBytes": 24438,
                     "TxBitRate": 58.5
                  }
               ],
               "Interval": 10000674819
            }
         }

Data in Kibana _source

{"WhenAddedToEsBulkProcessor":"2014-12-16T02:09:51.647Z","WhenPublishedToKafka":"2014-12-16T01:59:51.500184443Z","When":"2014-12-16T01:59:51.420269575Z","WhenConsumedFromKafka":"2014-12-16T01:59:51.645Z","kafkaPublishToEsBulkMs":600147,"HashKey":"00-11-22-33-44-56","ID":"00-11-22-33-44-56","KafkaPublishToConsumeMs":145,"Topic":"ep-client-stats-staging","Interval":10000632668}