diff --git a/CHANGELOG.md b/CHANGELOG.md
index 341cc8cf4fc29..60c5ea38ebddf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -49,6 +49,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Optimise snapshot deletion to speed up snapshot deletion and creation ([#15568](https://github.com/opensearch-project/OpenSearch/pull/15568))
 - [Remote Publication] Added checksum validation for cluster state behind a cluster setting ([#15218](https://github.com/opensearch-project/OpenSearch/pull/15218))
 - Add canRemain method to TargetPoolAllocationDecider to move shards from local to remote pool for hot to warm tiering ([#15010](https://github.com/opensearch-project/OpenSearch/pull/15010))
+- MultiTermQueries in keyword fields now default to `indexed` approach and gated behind cluster setting ([#15637](https://github.com/opensearch-project/OpenSearch/pull/15637))
 
 ### Dependencies
 - Bump `netty` from 4.1.111.Final to 4.1.112.Final ([#15081](https://github.com/opensearch-project/OpenSearch/pull/15081))
diff --git a/server/src/test/java/org/opensearch/index/search/NestedHelperTests.java b/server/src/test/java/org/opensearch/index/search/NestedHelperTests.java
index 7ffcc0fb7437a..f7f921e824490 100644
--- a/server/src/test/java/org/opensearch/index/search/NestedHelperTests.java
+++ b/server/src/test/java/org/opensearch/index/search/NestedHelperTests.java
@@ -57,6 +57,8 @@
 import java.io.IOException;
 import java.util.Collections;
 
+import static org.opensearch.index.mapper.FieldTypeTestCase.MOCK_QSC_ENABLE_INDEX_DOC_VALUES;
+
 public class NestedHelperTests extends OpenSearchSingleNodeTestCase {
 
     IndexService indexService;
@@ -132,28 +134,28 @@ public void testMatchNo() {
     }
 
     public void testTermsQuery() {
-        Query termsQuery = mapperService.fieldType("foo").termsQuery(Collections.singletonList("bar"), null);
+        Query termsQuery = mapperService.fieldType("foo").termsQuery(Collections.singletonList("bar"), MOCK_QSC_ENABLE_INDEX_DOC_VALUES);
         assertFalse(new NestedHelper(mapperService).mightMatchNestedDocs(termsQuery));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested1"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested2"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested3"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested_missing"));
 
-        termsQuery = mapperService.fieldType("nested1.foo").termsQuery(Collections.singletonList("bar"), null);
+        termsQuery = mapperService.fieldType("nested1.foo").termsQuery(Collections.singletonList("bar"), MOCK_QSC_ENABLE_INDEX_DOC_VALUES);
         assertTrue(new NestedHelper(mapperService).mightMatchNestedDocs(termsQuery));
         assertFalse(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested1"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested2"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested3"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested_missing"));
 
-        termsQuery = mapperService.fieldType("nested2.foo").termsQuery(Collections.singletonList("bar"), null);
+        termsQuery = mapperService.fieldType("nested2.foo").termsQuery(Collections.singletonList("bar"), MOCK_QSC_ENABLE_INDEX_DOC_VALUES);
         assertTrue(new NestedHelper(mapperService).mightMatchNestedDocs(termsQuery));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested1"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested2"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested3"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested_missing"));
 
-        termsQuery = mapperService.fieldType("nested3.foo").termsQuery(Collections.singletonList("bar"), null);
+        termsQuery = mapperService.fieldType("nested3.foo").termsQuery(Collections.singletonList("bar"), MOCK_QSC_ENABLE_INDEX_DOC_VALUES);
         assertTrue(new NestedHelper(mapperService).mightMatchNestedDocs(termsQuery));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested1"));
         assertTrue(new NestedHelper(mapperService).mightMatchNonNestedDocs(termsQuery, "nested2"));
diff --git a/server/src/test/java/org/opensearch/search/DefaultSearchContextTests.java b/server/src/test/java/org/opensearch/search/DefaultSearchContextTests.java
index 6cac995bb1884..7e213218eb97b 100644
--- a/server/src/test/java/org/opensearch/search/DefaultSearchContextTests.java
+++ b/server/src/test/java/org/opensearch/search/DefaultSearchContextTests.java
@@ -827,9 +827,8 @@ public void testSearchPathEvaluationWithConcurrentSearchModeAsAuto() throws Exce
 
         IndexService indexService = mock(IndexService.class);
         QueryShardContext queryShardContext = mock(QueryShardContext.class);
-        when(indexService.newQueryShardContext(eq(shardId.id()), any(), any(), nullable(String.class), anyBoolean(), any())).thenReturn(
-            queryShardContext
-        );
+        when(indexService.newQueryShardContext(eq(shardId.id()), any(), any(), nullable(String.class), anyBoolean(), anyBoolean()))
+            .thenReturn(queryShardContext);
 
         IndexMetadata indexMetadata = IndexMetadata.builder("index").settings(settings).build();
         IndexSettings indexSettings = new IndexSettings(indexMetadata, Settings.EMPTY);