diff --git a/x-pack/plugin/downsample/src/main/java/org/elasticsearch/xpack/downsample/TransportDownsampleAction.java b/x-pack/plugin/downsample/src/main/java/org/elasticsearch/xpack/downsample/TransportDownsampleAction.java
index 0570d93441be1..58401451fa86b 100644
--- a/x-pack/plugin/downsample/src/main/java/org/elasticsearch/xpack/downsample/TransportDownsampleAction.java
+++ b/x-pack/plugin/downsample/src/main/java/org/elasticsearch/xpack/downsample/TransportDownsampleAction.java
@@ -805,7 +805,17 @@ private void createDownsampleIndex(
             .put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, String.valueOf(numberOfReplicas))
             .put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), "-1")
             .put(IndexMetadata.INDEX_DOWNSAMPLE_STATUS.getKey(), DownsampleTaskStatus.STARTED)
-            .put(IndexMetadata.INDEX_DOWNSAMPLE_INTERVAL.getKey(), downsampleInterval);
+            .put(IndexMetadata.INDEX_DOWNSAMPLE_INTERVAL.getKey(), downsampleInterval)
+            .put(IndexSettings.MODE.getKey(), sourceIndexMetadata.getIndexMode())
+            .putList(IndexMetadata.INDEX_ROUTING_PATH.getKey(), sourceIndexMetadata.getRoutingPaths())
+            .put(
+                IndexSettings.TIME_SERIES_START_TIME.getKey(),
+                sourceIndexMetadata.getSettings().get(IndexSettings.TIME_SERIES_START_TIME.getKey())
+            )
+            .put(
+                IndexSettings.TIME_SERIES_END_TIME.getKey(),
+                sourceIndexMetadata.getSettings().get(IndexSettings.TIME_SERIES_END_TIME.getKey())
+            );
         if (sourceIndexMetadata.getSettings().hasValue(MapperService.INDEX_MAPPING_TOTAL_FIELDS_LIMIT_SETTING.getKey())) {
             builder.put(
                 MapperService.INDEX_MAPPING_TOTAL_FIELDS_LIMIT_SETTING.getKey(),