rebenitez1802 commented on code in PR #37681:
URL: https://github.com/apache/superset/pull/37681#discussion_r2874628554


##########
superset-frontend/src/dashboard/components/nativeFilters/FilterBar/index.tsx:
##########
@@ -319,10 +334,38 @@ const FilterBar: FC<FiltersBarProps> = ({
   }, [dashboardId, filters, previousDashboardId, setDataMaskSelected]);
 
   const dataMaskAppliedText = JSON.stringify(dataMaskApplied);
+  const prevDataMaskAppliedRef = useRef(dataMaskApplied);
 
   useEffect(() => {
-    setDataMaskSelected(() => dataMaskApplied);
-  }, [dataMaskAppliedText, setDataMaskSelected, dashboardId]);
+    const dashboardChanged = dashboardId !== previousDashboardId;
+
+    if (dashboardChanged) {
+      setDataMaskSelected(() => dataMaskApplied);
+    } else {
+      const prevApplied = prevDataMaskAppliedRef.current;
+
+      // Only sync filters whose applied state actually changed
+      setDataMaskSelected(prev => {
+        let hasChanges = false;
+        const updated = { ...prev };
+
+        Object.entries(dataMaskApplied).forEach(([filterId, appliedMask]) => {
+          const prevAppliedMask = prevApplied[filterId];
+          const appliedChanged = !isEqual(appliedMask, prevAppliedMask);
+          const notInitialized = !prev[filterId];
+
+          if (appliedChanged || notInitialized) {
+            updated[filterId] = appliedMask;
+            hasChanges = true;
+          }
+        });
+
+        return hasChanges ? updated : prev;
+      });

Review Comment:
   consider Adding a cleanup step to the merge logic — after iterating 
dataMaskApplied, remove any keys in prev that don't exist in dataMaskApplied 
like
   
   `Object.keys(prev).forEach(filterId => {
     if (!(filterId in dataMaskApplied)) {
       delete updated[filterId];
       hasChanges = true;
     }
   });`
   
   
   



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