diff --git a/.idea/bssapp.iml b/.idea/bssapp.iml
index 5e764c4..9c408cc 100644
--- a/.idea/bssapp.iml
+++ b/.idea/bssapp.iml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="WEB_MODULE" version="4">
   <component name="Go" enabled="true" />
+  <component name="GoModuleSettings" enabled="true" />
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
     <orderEntry type="inheritedJdk" />
diff --git a/svc/routes/production_product_costing.go b/svc/routes/production_product_costing.go
index 760f131..1626b87 100644
--- a/svc/routes/production_product_costing.go
+++ b/svc/routes/production_product_costing.go
@@ -1427,6 +1427,12 @@ func postProductionProductCostingOnMLSaveHandler(w http.ResponseWriter, r *http.
 	totalUSD := 0.0
 	totalEUR := 0.0
 	for _, r := range req.Detail.Upserts {
+		// The top header in the detail screen only includes rows marked
+		// "Maliyete Dahil". Persist that exact business total to the master
+		// record as well; excluded detail rows must not inflate the cost.
+		if r.MaliyeteDahil != 1 {
+			continue
+		}
 		qty := r.LMiktar
 		if qty < 0 {
 			qty = 0
diff --git a/ui/src/pages/ProductionProductCostingHasCostDetail.vue b/ui/src/pages/ProductionProductCostingHasCostDetail.vue
index eccb84d..38c1bcb 100644
--- a/ui/src/pages/ProductionProductCostingHasCostDetail.vue
+++ b/ui/src/pages/ProductionProductCostingHasCostDetail.vue
@@ -1558,7 +1558,7 @@ function ensureBeforeUnloadGuard (enabled) {
   }
 }
 const toolbarSummary = computed(() => flatDetailRows.value.reduce((acc, row) => {
-  if (!row?.maliyeteDahil) return acc
+  if (!normalizeBooleanFlag(row?.maliyeteDahil ?? row?.maliyete_dahil ?? row?.Maliyete_dahil)) return acc
   acc.tryTotal += resolveRowTRYTutar(row)
   acc.usdTotal += resolveRowUSDTutar(row)
   acc.eurTotal += resolveRowEURTutar(row)
@@ -2848,12 +2848,10 @@ function resolveRowUSDTutar (row) {
   return Number.isFinite(calc) ? calc : 0
 }
 
-function shouldIgnoreGroupMaliyeteDahil (grp) {
-  return isCMGroupName(grp?.sAciklama3)
-}
-
-function shouldIncludeRowInGroupTotal (grp, row) {
-  return shouldIgnoreGroupMaliyeteDahil(grp) || normalizeBooleanFlag(row?.maliyeteDahil)
+function shouldIncludeRowInGroupTotal (_grp, row) {
+  // Keep sub-header totals aligned with the top header and the value persisted
+  // to spUrtOnMLMas: only rows explicitly included in costing contribute.
+  return normalizeBooleanFlag(row?.maliyeteDahil ?? row?.maliyete_dahil ?? row?.Maliyete_dahil)
 }
 
 function resolveGroupTRYTutar (grp) {