diff --git a/src/Mod/Sketcher/App/GeometryFacade.cpp b/src/Mod/Sketcher/App/GeometryFacade.cpp
index 405775c00e..8a13bc1e4c 100644
--- a/src/Mod/Sketcher/App/GeometryFacade.cpp
+++ b/src/Mod/Sketcher/App/GeometryFacade.cpp
@@ -99,7 +99,19 @@ void GeometryFacade::initExtension() const
     const_cast<GeometryFacade *>(this)->SketchGeoExtension = ext;
 }
 
+void GeometryFacade::ensureSketchGeometryExtension(Part::Geometry * geometry)
+{
+    if(!geometry->hasExtension(SketchGeometryExtension::getClassTypeId())) {
+        geometry->setExtension(std::make_unique<SketchGeometryExtension>()); // Create getExtension
+    }
+}
 
+void GeometryFacade::copyId(const Part::Geometry * src, Part::Geometry * dst)
+{
+    auto gfsrc = GeometryFacade::getFacade(src);
+    auto gfdst = GeometryFacade::getFacade(dst);
+    gfdst->setId(gfsrc->getId());
+}
 
 PyObject * GeometryFacade::getPyObject(void)
 {
diff --git a/src/Mod/Sketcher/App/GeometryFacade.h b/src/Mod/Sketcher/App/GeometryFacade.h
index 8d5af28ee8..6dcd11be55 100644
--- a/src/Mod/Sketcher/App/GeometryFacade.h
+++ b/src/Mod/Sketcher/App/GeometryFacade.h
@@ -56,6 +56,10 @@ public: // Factory methods
     static std::unique_ptr<GeometryFacade> getFacade(Part::Geometry * geometry);
     static std::unique_ptr<const GeometryFacade> getFacade(const Part::Geometry * geometry);
 
+public: // Utility methods
+    static void ensureSketchGeometryExtension(Part::Geometry * geometry);
+    static void copyId(const Part::Geometry * src, Part::Geometry * dst);
+
 public:
     void setGeometry(Part::Geometry *geometry);