diff --git a/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCase.java b/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCase.java
index 91584fb45cf..066ab054e00 100644
--- a/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCase.java
+++ b/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCase.java
@@ -77,6 +77,16 @@ public abstract class OpenSearchSQLRestTestCase extends OpenSearchRestTestCase {
           + "}";
   private static final String SCRIPT_CONTEXT_MAX_COMPILATIONS_RATE_PATTERN =
       "script.context.*.max_compilations_rate";
+  // Per-class cleanup must not delete shared plugin state or force managed indices to be recreated.
+  private static final List<String> PLUGIN_MANAGED_INDEX_PREFIXES =
+      List.of(
+          ".opensearch",
+          ".opendistro",
+          ".ql",
+          ".plugins",
+          ".scheduler",
+          ".geospatial",
+          "security-auditlog-");
   private static RestClient remoteClient;
 
   /**
@@ -212,11 +222,7 @@ protected static void wipeAllOpenSearchIndices(RestClient client) throws IOExcep
         JSONObject jsonObject = (JSONObject) object;
         String indexName = jsonObject.getString("index");
         try {
-          // System index, mostly named .opensearch-xxx or .opendistro-xxx, are not allowed to
-          // delete
-          if (!indexName.startsWith(".opensearch")
-              && !indexName.startsWith(".opendistro")
-              && !indexName.startsWith(".ql")) {
+          if (!isPluginManagedIndex(indexName)) {
             client.performRequest(new Request("DELETE", "/" + indexName));
           }
         } catch (Exception e) {
@@ -230,6 +236,10 @@ protected static void wipeAllOpenSearchIndices(RestClient client) throws IOExcep
     }
   }
 
+  static boolean isPluginManagedIndex(String indexName) {
+    return PLUGIN_MANAGED_INDEX_PREFIXES.stream().anyMatch(indexName::startsWith);
+  }
+
   /**
    * Configure authentication and pass <b>builder</b> to superclass to configure other stuff.<br>
    * By default, auth is configure when <b>https</b> is set only.
diff --git a/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCaseIT.java b/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCaseIT.java
new file mode 100644
index 00000000000..195cd6b2004
--- /dev/null
+++ b/integ-test/src/test/java/org/opensearch/sql/legacy/OpenSearchSQLRestTestCaseIT.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.sql.legacy;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class OpenSearchSQLRestTestCaseIT {
+
+  @Test
+  public void identifiesPluginManagedIndices() {
+    assertTrue(OpenSearchSQLRestTestCase.isPluginManagedIndex(".opensearch-observability"));
+    assertTrue(OpenSearchSQLRestTestCase.isPluginManagedIndex(".opendistro_security"));
+    assertTrue(OpenSearchSQLRestTestCase.isPluginManagedIndex(".ql-datasources"));
+    assertTrue(OpenSearchSQLRestTestCase.isPluginManagedIndex(".plugins-ml-config"));
+    assertTrue(
+        OpenSearchSQLRestTestCase.isPluginManagedIndex(".scheduler-geospatial-ip2geo-datasource"));
+    assertTrue(
+        OpenSearchSQLRestTestCase.isPluginManagedIndex(".geospatial-ip2geo-data.datasource"));
+    assertTrue(OpenSearchSQLRestTestCase.isPluginManagedIndex("security-auditlog-2026.07.15"));
+  }
+
+  @Test
+  public void leavesTestIndicesEligibleForCleanup() {
+    assertFalse(OpenSearchSQLRestTestCase.isPluginManagedIndex("opensearch-sql_test_index_bank"));
+    assertFalse(OpenSearchSQLRestTestCase.isPluginManagedIndex("security-test-index"));
+    assertFalse(OpenSearchSQLRestTestCase.isPluginManagedIndex(".test-hidden-index"));
+  }
+}