diff --git a/superset/utils/core.py b/superset/utils/core.py
index 3d40b75928c3d..cf90963cd17cc 100644
--- a/superset/utils/core.py
+++ b/superset/utils/core.py
@@ -1039,7 +1039,8 @@ def merge_extra_form_data(form_data: Dict[str, Any]) -> None:
         "druid_time_origin": "__time_origin",
         "granularity": "__granularity",
     }
-    applied_time_extras = form_data["applied_time_extras"]
+    applied_time_extras = form_data.get("applied_time_extras", {})
+    form_data["applied_time_extras"] = applied_time_extras
     extra_form_data = form_data.pop("extra_form_data", {})
     append_form_data = extra_form_data.pop("append_form_data", {})
     append_filters = append_form_data.get("filters", None)
diff --git a/tests/utils_tests.py b/tests/utils_tests.py
index ab2f6ea33d9f6..571590d579798 100644
--- a/tests/utils_tests.py
+++ b/tests/utils_tests.py
@@ -57,6 +57,7 @@
     JSONEncodedDict,
     memoized,
     merge_extra_filters,
+    merge_extra_form_data,
     merge_request_params,
     parse_ssl_cert,
     parse_js_uri_path_item,
@@ -902,6 +903,35 @@ def test_build_extra_filters(self):
             layout, filter_scopes, default_filters, box_plot.id
         ) == [{"col": "region", "op": "==", "val": "North America"}]
 
+    def test_merge_extra_filters_with_no_extras(self):
+        form_data = {
+            "time_range": "Last 10 days",
+        }
+        merge_extra_form_data(form_data)
+        self.assertEqual(
+            form_data,
+            {
+                "time_range": "Last 10 days",
+                "applied_time_extras": {},
+                "adhoc_filters": [],
+            },
+        )
+
+    def test_merge_extra_filters_with_extras(self):
+        form_data = {
+            "time_range": "Last 10 days",
+            "extra_form_data": {
+                "append_form_data": {
+                    "filters": [{"col": "foo", "op": "IN", "val": "bar"}]
+                },
+                "override_form_data": {"time_range": "Last 100 years",},
+            },
+        }
+        merge_extra_form_data(form_data)
+        assert form_data["applied_time_extras"] == {"__time_range": "Last 100 years"}
+        assert form_data["time_range"] == "Last 100 years"
+        assert len(form_data["adhoc_filters"]) == 1
+
     def test_ssl_certificate_parse(self):
         parsed_certificate = parse_ssl_cert(ssl_certificate)
         self.assertEqual(parsed_certificate.serial_number, 12355228710836649848)