diff --git a/test/test_suit/base_iceberg_test.py b/test/test_suit/base_iceberg_test.py
index b9ab7dafc..6ff22bddf 100644
--- a/test/test_suit/base_iceberg_test.py
+++ b/test/test_suit/base_iceberg_test.py
@@ -36,7 +36,7 @@ def __init__(self, driver, name_salt: str, config_file_name: str):
             "null_object": {"key": "value"},
             "empty_array": [1, 2, 3],
             "some_object": {
-                "null_key": None,
+                "null_key": "solnik",
                 "string_key": "string_key",
                 "another_string_key": "another_string_key",
                 "inner_object": {
@@ -308,7 +308,7 @@ def _verify_iceberg_content_for_schema_evolution_2(self, content: dict):
         assert_equals([1, 2, 3], content['null_array'])
         assert_equals('value', content['null_object']['key'])
         assert_equals([1, 2, 3], content['empty_array'])
-        assert_equals(None, content['some_object']['null_key'])
+        assert_equals("solnik", content['some_object']['null_key'])
         assert_equals('string_key', content['some_object']['string_key'])
         assert_equals('another_string_key', content['some_object']['another_string_key'])
         assert_equals(456, content['some_object']['inner_object']['inner_object_key'])
diff --git a/test/test_suit/iceberg_schema_evolution_json_aws.py b/test/test_suit/iceberg_schema_evolution_json_aws.py
index 82f46e18e..a3d81c14f 100644
--- a/test/test_suit/iceberg_schema_evolution_json_aws.py
+++ b/test/test_suit/iceberg_schema_evolution_json_aws.py
@@ -16,22 +16,23 @@ def setup(self):
 
     def send(self):
         self._send_json_values(self.test_message_from_docs, 100)
-        self._send_json_values(self.test_message_for_schema_evolution_1, 100)
-        # TODO SNOW-1731264
-        # net.snowflake.ingest.utils.SFException: The given row cannot be converted to the internal format: Object of type java.util.LinkedHashMap cannot be ingested into Snowflake column NULL_OBJECT of type STRING, rowIndex:0. Allowed Java types: String, Number, boolean, char
-        # self._send_json_values(self.test_message_for_schema_evolution_2, 100)
+        # first 10 messages should be discarded due to lack of schema for null fields
+        self._send_json_values(self.test_message_for_schema_evolution_1, 10)
+        self._send_json_values(self.test_message_for_schema_evolution_2, 100)
+        # now with the schema coming from test_message_for_schema_evolution_2 we should be able to insert null values
+        self._send_json_values(self.test_message_for_schema_evolution_1, 10)
 
 
     def verify(self, round):
-        self._assert_number_of_records_in_table(200)
+        self._assert_number_of_records_in_table(210)
 
         actual_record_from_docs_dict = self._select_schematized_record_with_offset(1)
         self._verify_iceberg_content_from_docs(actual_record_from_docs_dict)
 
-        actual_record_for_schema_evolution_1 = self._select_schematized_record_with_offset(100)
-        self._verify_iceberg_content_for_schema_evolution_1(actual_record_for_schema_evolution_1)
+        actual_record_for_schema_evolution_2 = self._select_schematized_record_with_offset(100)
+        self._verify_iceberg_content_for_schema_evolution_2(actual_record_for_schema_evolution_2)
 
-        # TODO SNOW-1731264
-        # actual_record_for_schema_evolution_2 = self._select_schematized_record_with_offset(200)
+        actual_record_for_schema_evolution_1 = self._select_schematized_record_with_offset(200)
+        self._verify_iceberg_content_for_schema_evolution_1(actual_record_for_schema_evolution_1)