diff --git a/src/libs/vtools/tools/vtoolseamallowance.cpp b/src/libs/vtools/tools/vtoolseamallowance.cpp
index b1a371d11..6c53f0c04 100644
--- a/src/libs/vtools/tools/vtoolseamallowance.cpp
+++ b/src/libs/vtools/tools/vtoolseamallowance.cpp
@@ -107,6 +107,7 @@ VToolSeamAllowance *VToolSeamAllowance::Create(const QPointer<DialogTool> &dialo
     if (piece != nullptr)
     {
         piece->m_dialog = dialog;
+        piece->RefreshGeometry(true); // Refresh internal paths
     }
     return piece;
 }
@@ -179,7 +180,12 @@ VToolSeamAllowance *VToolSeamAllowance::Duplicate(const QPointer<DialogTool> &di
     initData.detail = detail;
     initData.width = initData.detail.GetFormulaSAWidth();
 
-    return Duplicate(initData);
+    VToolSeamAllowance *piece = Duplicate(initData);
+    if (piece != nullptr)
+    {
+        piece->RefreshGeometry(true); // Refresh internal paths
+    }
+    return piece;
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vtools/tools/vtooluniondetails.cpp b/src/libs/vtools/tools/vtooluniondetails.cpp
index 3ae47fa0f..195c8814f 100644
--- a/src/libs/vtools/tools/vtooluniondetails.cpp
+++ b/src/libs/vtools/tools/vtooluniondetails.cpp
@@ -1573,7 +1573,11 @@ void CreateUnitedDetail(const VToolUnionDetailsInitData &initData, qreal dx, qre
     pieceInitData.typeCreation = Source::FromTool;
     pieceInitData.drawName = drawName;
 
-    VToolSeamAllowance::Create(pieceInitData);
+    VToolSeamAllowance *piece = VToolSeamAllowance::Create(pieceInitData);
+    if (piece != nullptr)
+    {
+        piece->RefreshGeometry(true); // Refresh internal paths
+    }
 
     auto DuplicateDetail = [initData](quint32 id)
     {
@@ -1589,7 +1593,12 @@ void CreateUnitedDetail(const VToolUnionDetailsInitData &initData, qreal dx, qre
 
         initPieceData.detail = initData.data->GetPiece(id);
         initPieceData.width = initPieceData.detail.GetFormulaSAWidth();
-        VToolSeamAllowance::Duplicate(initPieceData);
+        VToolSeamAllowance *piece = VToolSeamAllowance::Duplicate(initPieceData);
+        if (piece != nullptr)
+        {
+            piece->RefreshGeometry(true); // Refresh internal paths
+        }
+
     };
 
     if (initData.retainPieces)