diff --git a/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/am/array/AbstractOperatorFromSubplanRewrite.java b/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/am/array/AbstractOperatorFromSubplanRewrite.java
index ba70aff..2bb8e2e 100644
--- a/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/am/array/AbstractOperatorFromSubplanRewrite.java
+++ b/asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/am/array/AbstractOperatorFromSubplanRewrite.java
@@ -207,8 +207,12 @@
                         // Add the inputs from our subplan.
                         Mutable<ILogicalOperator> traversalOperator = traversalOutput.first.getInputs().get(0);
                         while (traversalOperator != null) {
-                            workingNewOperator.getInputs().add(new MutableObject<>(
-                                    OperatorManipulationUtil.deepCopy(traversalOperator.getValue())));
+                            ILogicalOperator traversalOperatorDeepCopy =
+                                    OperatorManipulationUtil.deepCopy(traversalOperator.getValue());
+                            if (traversalOperator.getValue().equals(traversalOutput.second)) {
+                                traversalOutput.second = (UnnestOperator) traversalOperatorDeepCopy;
+                            }
+                            workingNewOperator.getInputs().add(new MutableObject<>(traversalOperatorDeepCopy));
                             workingNewOperator = workingNewOperator.getInputs().get(0).getValue();
                             traversalOperator = (traversalOperator.getValue().getInputs().isEmpty()) ? null
                                     : traversalOperator.getValue().getInputs().get(0);
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/array-index/select-quantified-queries/multiple-quantifiers/query10.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/array-index/select-quantified-queries/multiple-quantifiers/query10.sqlpp
new file mode 100644
index 0000000..45a00b8
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/array-index/select-quantified-queries/multiple-quantifiers/query10.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+SET               `compiler.arrayindex` "true";
+
+DROP DATAVERSE    TestDataverse IF EXISTS;
+CREATE DATAVERSE  TestDataverse;
+USE               TestDataverse;
+
+CREATE TYPE       TestType AS {
+    _id: uuid
+};
+CREATE DATASET    Dataset1 (TestType)
+PRIMARY KEY        _id AUTOGENERATED;
+CREATE INDEX      d1Idx
+ON                Dataset1 ( UNNEST items: string )
+EXCLUDE UNKNOWN KEY;
+
+-- Quantification in subplan, open index.
+FROM       Dataset1 D1
+WHERE      TRUE IN [ D1.val = "a", "b" IN D1.items ]
+SELECT     *;
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/array-index/select-quantified-queries/multiple-quantifiers/query11.sqlpp b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/array-index/select-quantified-queries/multiple-quantifiers/query11.sqlpp
new file mode 100644
index 0000000..adc5607
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/array-index/select-quantified-queries/multiple-quantifiers/query11.sqlpp
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+SET               `compiler.arrayindex` "true";
+
+DROP DATAVERSE    TestDataverse IF EXISTS;
+CREATE DATAVERSE  TestDataverse;
+USE               TestDataverse;
+
+CREATE TYPE       TestType AS {
+    _id: uuid
+};
+CREATE DATASET    Dataset1 (TestType)
+PRIMARY KEY        _id AUTOGENERATED;
+CREATE INDEX      d1Idx
+ON                Dataset1 ( UNNEST items: string )
+EXCLUDE UNKNOWN KEY;
+
+-- Quantification nested in two subplans, open index.
+FROM       Dataset1 D1
+WHERE      TRUE IN [ D1.val = "a", TRUE IN [ D1.val2 = "c", "b" IN D1.items ] ]
+SELECT     *;
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/array-index/select-quantified-queries/multiple-quantifiers/query10.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/array-index/select-quantified-queries/multiple-quantifiers/query10.plan
new file mode 100644
index 0000000..50d2d2d
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/array-index/select-quantified-queries/multiple-quantifiers/query10.plan
@@ -0,0 +1,36 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- STREAM_PROJECT  |PARTITIONED|
+          -- STREAM_SELECT  |PARTITIONED|
+            -- STREAM_PROJECT  |PARTITIONED|
+              -- SUBPLAN  |PARTITIONED|
+                      {
+                        -- AGGREGATE  |LOCAL|
+                          -- STREAM_SELECT  |LOCAL|
+                            -- UNNEST  |LOCAL|
+                              -- SUBPLAN  |LOCAL|
+                                      {
+                                        -- AGGREGATE  |LOCAL|
+                                          -- STREAM_SELECT  |LOCAL|
+                                            -- UNNEST  |LOCAL|
+                                              -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                      }
+                                -- NESTED_TUPLE_SOURCE  |LOCAL|
+                      }
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                      -- BTREE_SEARCH (TestDataverse.Dataset1.Dataset1)  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- PRE_SORTED_DISTINCT_BY  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$33(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (TestDataverse.Dataset1.d1Idx)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterixdb/asterix-app/src/test/resources/optimizerts/results/array-index/select-quantified-queries/multiple-quantifiers/query11.plan b/asterixdb/asterix-app/src/test/resources/optimizerts/results/array-index/select-quantified-queries/multiple-quantifiers/query11.plan
new file mode 100644
index 0000000..f14e55a
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/optimizerts/results/array-index/select-quantified-queries/multiple-quantifiers/query11.plan
@@ -0,0 +1,43 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- STREAM_PROJECT  |PARTITIONED|
+          -- STREAM_SELECT  |PARTITIONED|
+            -- STREAM_PROJECT  |PARTITIONED|
+              -- SUBPLAN  |PARTITIONED|
+                      {
+                        -- AGGREGATE  |LOCAL|
+                          -- STREAM_SELECT  |LOCAL|
+                            -- UNNEST  |LOCAL|
+                              -- SUBPLAN  |LOCAL|
+                                      {
+                                        -- AGGREGATE  |LOCAL|
+                                          -- STREAM_SELECT  |LOCAL|
+                                            -- UNNEST  |LOCAL|
+                                              -- SUBPLAN  |LOCAL|
+                                                      {
+                                                        -- AGGREGATE  |LOCAL|
+                                                          -- STREAM_SELECT  |LOCAL|
+                                                            -- UNNEST  |LOCAL|
+                                                              -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                                      }
+                                                -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                      }
+                                -- NESTED_TUPLE_SOURCE  |LOCAL|
+                      }
+                -- ASSIGN  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                      -- BTREE_SEARCH (TestDataverse.Dataset1.Dataset1)  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- PRE_SORTED_DISTINCT_BY  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- STABLE_SORT [$$41(ASC)]  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- BTREE_SEARCH (TestDataverse.Dataset1.d1Idx)  |PARTITIONED|
+                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|