From a13e251ad45c3562875e6bcc8e1c7e84882a4d52 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 11 Apr 2022 14:16:29 +0200
Subject: [PATCH] Part: issue #6727: Missing B-Spline in STEP file after Part
 Offset2D

---
 src/Mod/Part/App/TopoShape.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 5cecc40b30..4fca2e6975 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -2967,6 +2967,11 @@ TopoDS_Shape TopoShape::makeOffset2D(double offset, short joinType, bool fill, b
             }
             offsetShape = mkOffset.Shape();
 
+            // Replace OffsetCurve with B-Spline
+            if (!offsetShape.IsNull()) {
+                offsetShape = mkOffset.Replace(GeomAbs_OffsetCurve, offsetShape);
+            }
+
             if (offsetShape.IsNull())
                 throw Base::CADKernelError("makeOffset2D: result of offsetting is null!");