diff --git a/resources/tester/test_est_escalation_workflow.py b/resources/tester/test_est_escalation_workflow.py
index fc0dfaca0..182cc3fbd 100644
--- a/resources/tester/test_est_escalation_workflow.py
+++ b/resources/tester/test_est_escalation_workflow.py
@@ -1,6 +1,25 @@
 from test_est_rea_parity import run
 
 
+def test_escalation_distinguishes_repeated_codes_without_row_ids():
+    result = run(
+        "math",
+        """(()=>{
+      const p=EstNative.empty();p.options.SourceRefresh=false;p.options.EscDesignTotal=1000;
+      p.tables.EstMainDat=[{Code:'A',Name:'first',GN:10,GU:80},
+        {Code:'A',Name:'second',GN:20,GU:50},{LinkIndex:54}];
+      const q=EstBusiness.baseline(EstNative.calculate(p));
+      Object.assign(q.tables.EstMainDat[0],{AGU:100,GU:120,EscActual:2});
+      Object.assign(q.tables.EstMainDat[1],{AGU:100,GU:120,EscActual:5});
+      return EstEscalation.calculate(q);
+    })()""",
+    )
+    assert [row["EscApplied"] for row in result["rows"][:2]] == [8, 15]
+    assert [row["EGU"] for row in result["rows"][:2]] == [16, 10]
+    assert [row["ContractGU"] for row in result["rows"][:2]] == [80, 50]
+    assert result["excludedTotal"] == 410
+
+
 def test_progress_exclusions_preserve_new_rows_and_reject_ambiguous_keys():
     result = run(
         "math",
diff --git a/tools/est-test/native-escalation.js b/tools/est-test/native-escalation.js
index 9433d48b8..ae6f512a0 100644
--- a/tools/est-test/native-escalation.js
+++ b/tools/est-test/native-escalation.js
@@ -16,11 +16,23 @@ const EstEscalation = (() => {
           if (row[field + "_"] != null) old[field] = row[field + "_"];
         return old;
       });
-    const contracts = new Map(original.map((row, index) => [key(row, index), row]));
+    const identities = (items) => {
+      const counts = new Map();
+      return items.map((row, index) => {
+        const id = key(row, index),
+          occurrence = counts.get(id) || 0;
+        counts.set(id, occurrence + 1);
+        return JSON.stringify([id, occurrence]);
+      });
+    };
+    const originalKeys = identities(original),
+      rowKeys = identities(rows);
+    const contracts = new Map(original.map((row, index) => [originalKeys[index], row]));
     const design = structuredClone(original),
       excluded = structuredClone(original);
     rows.forEach((row, index) => {
-      const old = contracts.get(key(row, index)) || row;
+      const old = contracts.get(rowKeys[index]) || row;
+      units.forEach((unit) => (row[`Contract${unit}`] = num(old[unit])));
       const auto = row.EscAuto !== false;
       const quantity = auto
         ? Math.max(num(row.EscPlanned), num(row.EscActual), num(row.EscProgress))
@@ -48,10 +60,10 @@ const EstEscalation = (() => {
       });
       if (![1, 3].includes(num(row.CalcIndex))) row.TC = sum(row);
     });
-    const current = new Map(rows.map((row, index) => [key(row, index), row]));
+    const current = new Map(rows.map((row, index) => [rowKeys[index], row]));
     design.forEach((row, index) => {
       if (num(row.Level) > 0 || special(row)) return;
-      const now = current.get(key(row, index));
+      const now = current.get(originalKeys[index]);
       if (!now) return;
       units.forEach((unit) => {
         if (now["A" + unit] != null) row[unit] = num(now["A" + unit]);
@@ -59,7 +71,7 @@ const EstEscalation = (() => {
     });
     excluded.forEach((row, index) => {
       if (num(row.Level) > 0 || special(row)) return;
-      const now = current.get(key(row, index)),
+      const now = current.get(originalKeys[index]),
         quantity = num(now?.EscExcluded),
         oldQuantity = num(row.GN);
       if ([1, 3].includes(num(row.CalcIndex))) {
diff --git a/tools/est-test/native-extra.js b/tools/est-test/native-extra.js
index 66501a6d1..03d83d4e0 100644
--- a/tools/est-test/native-extra.js
+++ b/tools/est-test/native-extra.js
@@ -218,16 +218,12 @@ const EstExtra = (() => {
             ![54, 55, 58, 59].includes(Number(row.LinkIndex)),
         )
         .map(({ row, index }) => {
-          const old =
-              project.baseline?.tables.EstMainDat.find(
-                (r, i) => EstBusiness.rowKey(r, i) === EstBusiness.rowKey(row, index),
-              ) || row,
-            result = output.rows[index];
+          const result = output.rows[index];
           return [
             esc(row.Code),
             esc(row.Name),
             EstViews.cell("EstMainDat", index, `A${comp}`, row[`A${comp}`]),
-            number(project.baseline ? old[comp] : (row[comp + "_"] ?? row[comp])),
+            number(result[`Contract${comp}`]),
             EstViews.cell("EstMainDat", index, comp, row[comp]),
             number(result[`D${comp}`]),
             number(result[`E${comp}`]),