diff --git a/x-pack/legacy/plugins/monitoring/server/kibana_monitoring/lib/send_bulk_payload.js b/x-pack/legacy/plugins/monitoring/server/kibana_monitoring/lib/send_bulk_payload.js
index a1c0ca2f0b3a1..a9c4125b55a79 100644
--- a/x-pack/legacy/plugins/monitoring/server/kibana_monitoring/lib/send_bulk_payload.js
+++ b/x-pack/legacy/plugins/monitoring/server/kibana_monitoring/lib/send_bulk_payload.js
@@ -21,6 +21,8 @@ export function formatForNormalBulkEndpoint(payload, productionClusterUuid) {
       return accum;
     }
 
+    const { timestamp } = chunk[1];
+
     accum.push({
       index: {
         _index: `.monitoring-kibana-${MONITORING_SYSTEM_API_VERSION}-${dateSuffix}`,
@@ -29,6 +31,7 @@ export function formatForNormalBulkEndpoint(payload, productionClusterUuid) {
     accum.push({
       [type]: chunk[1],
       type,
+      timestamp,
       cluster_uuid: productionClusterUuid,
     });
     return accum;