diff --git a/src/test/regress/expected/insert_select_repartition.out b/src/test/regress/expected/insert_select_repartition.out
index 9cf213ff6..b483b3d7f 100644
--- a/src/test/regress/expected/insert_select_repartition.out
+++ b/src/test/regress/expected/insert_select_repartition.out
@@ -1101,6 +1101,16 @@ SELECT create_distributed_function('dist_func(int, int)');
 (1 row)
 
 SET client_min_messages TO DEBUG;
+SET citus.enable_unique_job_ids TO off;
+INSERT INTO source_table VALUES (1,2, '2020-02-02', 3, 4, 5);
+DEBUG:  Creating router plan
+DEBUG:  Plan is router executable
+INSERT INTO source_table VALUES (1,2, '2020-02-02', 3, 4, 5);
+DEBUG:  Creating router plan
+DEBUG:  Plan is router executable
+INSERT INTO source_table VALUES (3,4, '2020-02-02', 3, 4, 5);
+DEBUG:  Creating router plan
+DEBUG:  Plan is router executable
 INSERT INTO target_table AS enriched(c1, c2, c3, c4, c5, c6, cardinality, sum)
 SELECT c1, c2, c3, c4, -1::float AS c5,
        dist_func(c1, 4) c6,
@@ -1117,6 +1127,34 @@ DEBUG:  INSERT target table and the source relation of the SELECT partition colu
 DEBUG:  Router planner cannot handle multi-shard select queries
 DEBUG:  performing repartitioned INSERT ... SELECT
 DEBUG:  partitioning SELECT query by column index 0 with name 'c1'
+DEBUG:  distributed statement: INSERT INTO insert_select_repartition.target_table_4213639 AS enriched (c1, c2, c3, c4, c5, c6, cardinality, sum) SELECT c1, c2, c3, c4, c5, c6, cardinality, sum FROM read_intermediate_results('{repartitioned_results_xxxxx_from_4213644_to_0}'::text[], 'binary'::citus_copy_format) intermediate_result(c1 integer, c2 integer, c3 timestamp without time zone, c4 integer, c5 integer, c6 integer[], cardinality integer, sum integer) ON CONFLICT(c1, c2, c3, c4, c5, c6) DO UPDATE SET cardinality = (enriched.cardinality OPERATOR(pg_catalog.+) excluded.cardinality), sum = (enriched.sum OPERATOR(pg_catalog.+) excluded.sum)
+DEBUG:  distributed statement: INSERT INTO insert_select_repartition.target_table_4213641 AS enriched (c1, c2, c3, c4, c5, c6, cardinality, sum) SELECT c1, c2, c3, c4, c5, c6, cardinality, sum FROM read_intermediate_results('{repartitioned_results_xxxxx_from_4213645_to_2}'::text[], 'binary'::citus_copy_format) intermediate_result(c1 integer, c2 integer, c3 timestamp without time zone, c4 integer, c5 integer, c6 integer[], cardinality integer, sum integer) ON CONFLICT(c1, c2, c3, c4, c5, c6) DO UPDATE SET cardinality = (enriched.cardinality OPERATOR(pg_catalog.+) excluded.cardinality), sum = (enriched.sum OPERATOR(pg_catalog.+) excluded.sum)
+RESET client_min_messages;
+EXPLAIN (COSTS OFF) INSERT INTO target_table AS enriched(c1, c2, c3, c4, c5, c6, cardinality, sum)
+SELECT c1, c2, c3, c4, -1::float AS c5,
+       dist_func(c1, 4) c6,
+       sum(cardinality),
+       sum(sum)
+FROM source_table
+GROUP BY c1, c2, c3, c4, c5, c6
+ON CONFLICT(c1, c2, c3, c4, c5, c6)
+DO UPDATE SET
+ cardinality = enriched.cardinality + excluded.cardinality,
+ sum = enriched.sum + excluded.sum;
+                                                    QUERY PLAN
+---------------------------------------------------------------------
+ Custom Scan (Citus INSERT ... SELECT)
+   INSERT/SELECT method: repartition
+   ->  Custom Scan (Citus Adaptive)
+         Task Count: 4
+         Tasks Shown: One of 4
+         ->  Task
+               Node: host=localhost port=xxxxx dbname=regression
+               ->  HashAggregate
+                     Group Key: c1, c2, c3, c4, '-1'::double precision, insert_select_repartition.dist_func(c1, 4)
+                     ->  Seq Scan on source_table_4213644 source_table
+(10 rows)
+
 -- clean-up
 SET client_min_messages TO WARNING;
 DROP SCHEMA insert_select_repartition CASCADE;
diff --git a/src/test/regress/sql/insert_select_repartition.sql b/src/test/regress/sql/insert_select_repartition.sql
index 2d0b3dbd6..8d8b625ea 100644
--- a/src/test/regress/sql/insert_select_repartition.sql
+++ b/src/test/regress/sql/insert_select_repartition.sql
@@ -528,6 +528,11 @@ LANGUAGE plpgsql STABLE;
 SELECT create_distributed_function('dist_func(int, int)');
 
 SET client_min_messages TO DEBUG;
+SET citus.enable_unique_job_ids TO off;
+INSERT INTO source_table VALUES (1,2, '2020-02-02', 3, 4, 5);
+INSERT INTO source_table VALUES (1,2, '2020-02-02', 3, 4, 5);
+INSERT INTO source_table VALUES (3,4, '2020-02-02', 3, 4, 5);
+
 INSERT INTO target_table AS enriched(c1, c2, c3, c4, c5, c6, cardinality, sum)
 SELECT c1, c2, c3, c4, -1::float AS c5,
        dist_func(c1, 4) c6,
@@ -540,7 +545,20 @@ DO UPDATE SET
  cardinality = enriched.cardinality + excluded.cardinality,
  sum = enriched.sum + excluded.sum;
 
--- clean-up
+RESET client_min_messages;
 
+EXPLAIN (COSTS OFF) INSERT INTO target_table AS enriched(c1, c2, c3, c4, c5, c6, cardinality, sum)
+SELECT c1, c2, c3, c4, -1::float AS c5,
+       dist_func(c1, 4) c6,
+       sum(cardinality),
+       sum(sum)
+FROM source_table
+GROUP BY c1, c2, c3, c4, c5, c6
+ON CONFLICT(c1, c2, c3, c4, c5, c6)
+DO UPDATE SET
+ cardinality = enriched.cardinality + excluded.cardinality,
+ sum = enriched.sum + excluded.sum;
+
+-- clean-up
 SET client_min_messages TO WARNING;
 DROP SCHEMA insert_select_repartition CASCADE;