diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/MixedTimeseries/buildQuery.ts b/superset-frontend/plugins/plugin-chart-echarts/src/MixedTimeseries/buildQuery.ts
index b85feb1eee5f..9adc149489a2 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/MixedTimeseries/buildQuery.ts
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/MixedTimeseries/buildQuery.ts
@@ -22,7 +22,11 @@ import {
   QueryObject,
   normalizeOrderBy,
 } from '@superset-ui/core';
-import { flattenOperator, pivotOperator } from '@superset-ui/chart-controls';
+import {
+  pivotOperator,
+  renameOperator,
+  flattenOperator,
+} from '@superset-ui/chart-controls';
 
 export default function buildQuery(formData: QueryFormData) {
   const {
@@ -66,7 +70,11 @@ export default function buildQuery(formData: QueryFormData) {
       is_timeseries: true,
       post_processing: [
         pivotOperator(formData1, { ...baseQueryObject, is_timeseries: true }),
-        flattenOperator(formData1, { ...baseQueryObject, is_timeseries: true }),
+        renameOperator(formData1, {
+          ...baseQueryObject,
+          ...{ is_timeseries: true },
+        }),
+        flattenOperator(formData1, baseQueryObject),
       ],
     } as QueryObject;
     return [normalizeOrderBy(queryObjectA)];
@@ -78,7 +86,11 @@ export default function buildQuery(formData: QueryFormData) {
       is_timeseries: true,
       post_processing: [
         pivotOperator(formData2, { ...baseQueryObject, is_timeseries: true }),
-        flattenOperator(formData2, { ...baseQueryObject, is_timeseries: true }),
+        renameOperator(formData2, {
+          ...baseQueryObject,
+          ...{ is_timeseries: true },
+        }),
+        flattenOperator(formData2, baseQueryObject),
       ],
     } as QueryObject;
     return [normalizeOrderBy(queryObjectB)];