diff --git a/src/Mod/TechDraw/App/Cosmetic.cpp b/src/Mod/TechDraw/App/Cosmetic.cpp
index 903793b990..90abbcb2f0 100644
--- a/src/Mod/TechDraw/App/Cosmetic.cpp
+++ b/src/Mod/TechDraw/App/Cosmetic.cpp
@@ -318,11 +318,14 @@ CosmeticVertex* CosmeticVertex::clone(void) const
 
 PyObject* CosmeticVertex::getPyObject(void)
 {
-//    return new CosmeticVertexPy(new CosmeticVertex(this->copy()));  //shouldn't this be clone?
-    PyObject* result = new CosmeticVertexPy(this->clone());
-    return result;
+    if (PythonObject.is(Py::_None())) {
+        // ref counter is set to 1
+        PythonObject = Py::Object(new CosmeticVertexPy(this),true);
+    }
+    return Py::new_reference_to(PythonObject);
 }
 
+
 void CosmeticVertex::dump(const char* title)
 {
     Base::Console().Message("CV::dump - %s \n",title);
@@ -403,12 +406,13 @@ void CosmeticEdge::initialize(void)
     m_geometry->setCosmeticTag(getTagAsString());
 }
 
-void CosmeticEdge::unscaleEnds(double scale)
-{
-    permaStart = permaStart / scale;
-    permaEnd   = permaEnd   / scale;
-    permaRadius = permaRadius / scale;
-}
+//why is this needed?  isn't permaxxxx always unscaled??
+//void CosmeticEdge::unscaleEnds(double scale)
+//{
+//    permaStart = permaStart / scale;
+//    permaEnd   = permaEnd   / scale;
+//    permaRadius = permaRadius / scale;
+//}
 
 TechDraw::BaseGeom* CosmeticEdge::scaledGeometry(double scale)
 {
@@ -567,9 +571,14 @@ CosmeticEdge* CosmeticEdge::clone(void) const
 
 PyObject* CosmeticEdge::getPyObject(void)
 {
-    return new CosmeticEdgePy(this->clone());
+    if (PythonObject.is(Py::_None())) {
+        // ref counter is set to 1
+        PythonObject = Py::Object(new CosmeticEdgePy(this),true);
+    }
+    return Py::new_reference_to(PythonObject);
 }
 
+
 //*********************************************************
 
 TYPESYSTEM_SOURCE(TechDraw::CenterLine,Base::Persistence)
@@ -1419,9 +1428,14 @@ CenterLine *CenterLine::clone(void) const
 
 PyObject* CenterLine::getPyObject(void)
 {
-    return new CenterLinePy(this->clone());
+    if (PythonObject.is(Py::_None())) {
+        // ref counter is set to 1
+        PythonObject = Py::Object(new CenterLinePy(this),true);
+    }
+    return Py::new_reference_to(PythonObject);
 }
 
+
 void CenterLine::setShifts(double h, double v)
 {
     m_hShift = h;
@@ -1615,7 +1629,11 @@ GeomFormat* GeomFormat::copy(void) const
 
 PyObject* GeomFormat::getPyObject(void)
 {
-    return new GeomFormatPy(new GeomFormat(this->copy()));
+    if (PythonObject.is(Py::_None())) {
+        // ref counter is set to 1
+        PythonObject = Py::Object(new GeomFormatPy(this),true);
+    }
+    return Py::new_reference_to(PythonObject);
 }
 
 bool CosmeticVertex::restoreCosmetic(void)
diff --git a/src/Mod/TechDraw/App/Cosmetic.h b/src/Mod/TechDraw/App/Cosmetic.h
index 961e753c54..91cbf02a25 100644
--- a/src/Mod/TechDraw/App/Cosmetic.h
+++ b/src/Mod/TechDraw/App/Cosmetic.h
@@ -113,6 +113,9 @@ protected:
 
     boost::uuids::uuid tag;
 
+    Py::Object PythonObject;
+
+
 };
 
 //********** CosmeticEdge ******************************************************
@@ -147,7 +150,7 @@ public:
     Base::Vector3d permaStart;         //persistent unscaled start/end points in View coords?
     Base::Vector3d permaEnd; 
     double permaRadius;
-    void unscaleEnds(double scale);
+//    void unscaleEnds(double scale);
     TechDraw::BaseGeom* m_geometry;
     LineFormat m_format;
 
@@ -158,8 +161,10 @@ protected:
     //Uniqueness
     void createNewTag();
     void assignTag(const TechDraw::CosmeticEdge* ce);
-
     boost::uuids::uuid tag;
+
+    Py::Object PythonObject;
+
 };
 
 //***** CenterLine *************************************************************
@@ -269,6 +274,8 @@ protected:
 
     boost::uuids::uuid tag;
 
+    Py::Object PythonObject;
+
 };
 
 //********** GeomFormat ********************************************************
@@ -310,6 +317,7 @@ protected:
     void assignTag(const TechDraw::GeomFormat* gf);
 
     boost::uuids::uuid tag;
+    Py::Object PythonObject;
 };
 
 } //end namespace TechDraw
diff --git a/src/Mod/TechDraw/App/CosmeticExtension.cpp b/src/Mod/TechDraw/App/CosmeticExtension.cpp
index a59863ddbe..be67d20dff 100644
--- a/src/Mod/TechDraw/App/CosmeticExtension.cpp
+++ b/src/Mod/TechDraw/App/CosmeticExtension.cpp
@@ -282,7 +282,9 @@ bool CosmeticExtension::replaceCosmeticEdge(CosmeticEdge* newCE)
     std::vector<CosmeticEdge*> newEdges;
     std::string tag = newCE->getTagAsString();
     for (auto& ce: cEdges) {
-        if (ce->getTagAsString() == tag)  {
+        Base::Console().Message("CX::replaceCosmeticEdge - newCE: %X/%s matching: %X/xxx \n",
+                                newCE, tag.c_str(), ce);
+        if (ce->getTagAsString() == tag)  {    //<<<<
             newEdges.push_back(newCE);
             result = true;
         } else { 
diff --git a/src/Mod/TechDraw/App/DrawViewPart.cpp b/src/Mod/TechDraw/App/DrawViewPart.cpp
index 74fd8d0629..17697d65af 100644
--- a/src/Mod/TechDraw/App/DrawViewPart.cpp
+++ b/src/Mod/TechDraw/App/DrawViewPart.cpp
@@ -1168,6 +1168,7 @@ void DrawViewPart::resetReferenceVerts()
 //********
 //* Cosmetics
 //********
+
 void DrawViewPart::clearCosmeticVertexes(void)
 {
     std::vector<CosmeticVertex*> noVerts;
@@ -1263,7 +1264,7 @@ void DrawViewPart::clearCosmeticEdges(void)
 //add the cosmetic edges to geometry edge list
 void DrawViewPart::addCosmeticEdgesToGeom(void)
 {
-//    Base::Console().Message("CEx::addCosmeticEdgesToGeom()\n");
+    Base::Console().Message("CEx::addCosmeticEdgesToGeom()\n");
     const std::vector<TechDraw::CosmeticEdge*> cEdges = CosmeticEdges.getValues();
     for (auto& ce: cEdges) {
         TechDraw::BaseGeom* scaledGeom = ce->scaledGeometry(getScale());
@@ -1294,7 +1295,7 @@ int DrawViewPart::add1CEToGE(std::string tag)
 //update Edge geometry with current CE's 
 void DrawViewPart::refreshCEGeoms(void)
 {
-//    Base::Console().Message("DVP::refreshCEGeoms()\n");
+    Base::Console().Message("DVP::refreshCEGeoms()\n");
     std::vector<TechDraw::BaseGeom *> gEdges = getEdgeGeometry();
     std::vector<TechDraw::BaseGeom *> oldGEdges;
     for (auto& ge :gEdges) {
diff --git a/src/Mod/TechDraw/App/DrawViewPartPy.xml b/src/Mod/TechDraw/App/DrawViewPartPy.xml
index fcf6bf9bf1..1e08c465d7 100644
--- a/src/Mod/TechDraw/App/DrawViewPartPy.xml
+++ b/src/Mod/TechDraw/App/DrawViewPartPy.xml
@@ -148,6 +148,11 @@
         <UserDocu>getVertexByIndex(vertexIndex). Returns Part.TopoShape.</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="requestPaint">
+      <Documentation>
+        <UserDocu>requestPaint(). Redraw the graphic for this View.</UserDocu>
+      </Documentation>
+    </Methode>
     <CustomAttributes />
   </PythonExport>
 </GenerateModel>
diff --git a/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp b/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp
index a25f510514..69e49b8145 100644
--- a/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp
+++ b/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp
@@ -105,8 +105,16 @@ PyObject* DrawViewPartPy::getHiddenEdges(PyObject *args)
     return pEdgeList;
 }
 
-// remove all cosmetics
+PyObject* DrawViewPartPy::requestPaint(PyObject *args)
+{
+    (void) args;
+    DrawViewPart* item = getDrawViewPartPtr();
+    item->requestPaint();
+    Py_INCREF(Py_None);
+    return Py_None;
+}
 
+// remove all cosmetics
 PyObject* DrawViewPartPy::clearCosmeticVertices(PyObject *args)
 {
     (void) args;
@@ -457,8 +465,8 @@ PyObject* DrawViewPartPy::getCosmeticEdge(PyObject *args)
     TechDraw::CosmeticEdge* ce = dvp->getCosmeticEdge(tag);
     if (ce != nullptr) {
 //        result = new CosmeticEdgePy(new CosmeticEdge(ce));
-        result = new CosmeticEdgePy(ce->clone());
-//        result = ce->getPyObject();
+//        result = new CosmeticEdgePy(ce->clone());
+        result = ce->getPyObject();
     } else {
         Base::Console().Error("DVPPI::getCosmeticEdge - edge %s not found\n", tag);
     }
@@ -478,8 +486,8 @@ PyObject* DrawViewPartPy::getCosmeticEdgeBySelection(PyObject *args)
 
     TechDraw::CosmeticEdge* ce = dvp->getCosmeticEdgeBySelection(name);
     if (ce != nullptr) {
-//        result = ce->getPyObject();
-        result = new CosmeticEdgePy(ce->clone());
+        result = ce->getPyObject();
+//        result = new CosmeticEdgePy(ce->clone());
     } else {
         Base::Console().Error("DVPPI::getCosmeticEdgebySelection - edge for name %s not found\n", name);
     }
@@ -489,6 +497,7 @@ PyObject* DrawViewPartPy::getCosmeticEdgeBySelection(PyObject *args)
 PyObject* DrawViewPartPy::replaceCosmeticEdge(PyObject *args)
 {
 //    Base::Console().Message("DVPPI::replaceCosmeticEdge()\n");
+    bool result = false;
     PyObject* pNewCE;
     if (!PyArg_ParseTuple(args, "O!", &(TechDraw::CosmeticEdgePy::Type), &pNewCE)) {
         throw Py::TypeError("expected (CosmeticEdge)");
@@ -496,9 +505,11 @@ PyObject* DrawViewPartPy::replaceCosmeticEdge(PyObject *args)
     DrawViewPart* dvp = getDrawViewPartPtr();
     TechDraw::CosmeticEdgePy* cePy = static_cast<TechDraw::CosmeticEdgePy*>(pNewCE);
     TechDraw::CosmeticEdge* ce = cePy->getCosmeticEdgePtr();
-    bool result = dvp->replaceCosmeticEdge(ce);
-    dvp->refreshCEGeoms();
-    dvp->requestPaint();
+    if (ce != nullptr) {
+        result = dvp->replaceCosmeticEdge(ce);                 //<<<
+        dvp->refreshCEGeoms();
+        dvp->requestPaint();
+    }
     return PyBool_FromLong((long) result);
 }
 
diff --git a/src/Mod/TechDraw/App/GeometryObject.cpp b/src/Mod/TechDraw/App/GeometryObject.cpp
index 2180d9be7f..63f2573e6f 100644
--- a/src/Mod/TechDraw/App/GeometryObject.cpp
+++ b/src/Mod/TechDraw/App/GeometryObject.cpp
@@ -636,7 +636,7 @@ int GeometryObject::addCosmeticVertex(Base::Vector3d pos, std::string tagString)
 // insertGeomForCE(ce)
 int GeometryObject::addCosmeticEdge(CosmeticEdge* ce)
 {
-    Base::Console().Message("GO::addCosmeticEdge(%X)\n", ce);
+    Base::Console().Message("GO::addCosmeticEdge(%X) 0\n", ce);
     double scale = m_parent->getScale();
     TechDraw::BaseGeom* e = ce->scaledGeometry(scale);
     e->cosmetic = true;
@@ -687,6 +687,7 @@ int GeometryObject::addCosmeticEdge(Base::Vector3d start,
 int GeometryObject::addCosmeticEdge(TechDraw::BaseGeom* base,
                                     std::string tagString)
 {
+    Base::Console().Message("GO::addCosmeticEdge(%X, %s) 3\n", base, tagString.c_str());
     base->cosmetic = true;
     base->hlrVisible = true;
     base->source(1);           //1-CosmeticEdge, 2-CenterLine
diff --git a/src/Mod/TechDraw/App/PropertyCenterLineList.cpp b/src/Mod/TechDraw/App/PropertyCenterLineList.cpp
index fbe6f29d3b..1439ebb718 100644
--- a/src/Mod/TechDraw/App/PropertyCenterLineList.cpp
+++ b/src/Mod/TechDraw/App/PropertyCenterLineList.cpp
@@ -63,14 +63,12 @@ PropertyCenterLineList::PropertyCenterLineList()
 
 PropertyCenterLineList::~PropertyCenterLineList()
 {
-    for (std::vector<CenterLine*>::iterator it = _lValueList.begin(); it != _lValueList.end(); ++it)
-        if (*it) delete *it;
 }
 
 void PropertyCenterLineList::setSize(int newSize)
 {
-    for (unsigned int i = newSize; i < _lValueList.size(); i++)
-        delete _lValueList[i];
+//    for (unsigned int i = newSize; i < _lValueList.size(); i++)
+//        delete _lValueList[i];
     _lValueList.resize(newSize);
 }
 
@@ -79,15 +77,12 @@ int PropertyCenterLineList::getSize(void) const
     return static_cast<int>(_lValueList.size());
 }
 
-void PropertyCenterLineList::setValue(const CenterLine* lValue)
+void PropertyCenterLineList::setValue(CenterLine* lValue)
 {
     if (lValue) {
         aboutToSetValue();
-        CenterLine* newVal = lValue->clone();
-        for (unsigned int i = 0; i < _lValueList.size(); i++)
-            delete _lValueList[i];
         _lValueList.resize(1);
-        _lValueList[0] = newVal;
+        _lValueList[0] = lValue;
         hasSetValue();
     }
 }
@@ -95,13 +90,9 @@ void PropertyCenterLineList::setValue(const CenterLine* lValue)
 void PropertyCenterLineList::setValues(const std::vector<CenterLine*>& lValue)
 {
     aboutToSetValue();
-    std::vector<CenterLine*> oldVals(_lValueList);
     _lValueList.resize(lValue.size());
-    // copy all objects
     for (unsigned int i = 0; i < lValue.size(); i++)
-        _lValueList[i] = lValue[i]->clone();
-    for (unsigned int i = 0; i < oldVals.size(); i++)
-        delete oldVals[i];
+        _lValueList[i] = lValue[i];
     hasSetValue();
 }
 
@@ -115,9 +106,6 @@ PyObject *PropertyCenterLineList::getPyObject(void)
 
 void PropertyCenterLineList::setPyObject(PyObject *value)
 {
-    // check container of this property to notify about changes
-//    Part2DObject* part2d = dynamic_cast<Part2DObject*>(this->getContainer());
-
     if (PySequence_Check(value)) {
         Py_ssize_t nSize = PySequence_Size(value);
         std::vector<CenterLine*> values;
@@ -135,8 +123,6 @@ void PropertyCenterLineList::setPyObject(PyObject *value)
         }
 
         setValues(values);
-//        if (part2d)
-//            part2d->acceptCenterLine();
     }
     else if (PyObject_TypeCheck(value, &(CenterLinePy::Type))) {
         CenterLinePy  *pcObject = static_cast<CenterLinePy*>(value);
@@ -153,7 +139,7 @@ void PropertyCenterLineList::Save(Writer &writer) const
 {
     writer.Stream() << writer.ind() << "<CenterLineList count=\"" << getSize() <<"\">" << endl;
     writer.incInd();
-    for (int i = 0; i < getSize(); i++) {
+    for (int i = 0; i < getSize(); i++) { 
         writer.Stream() << writer.ind() << "<CenterLine  type=\""
                         << _lValueList[i]->getTypeId().getName() << "\">" << endl;
         writer.incInd();
diff --git a/src/Mod/TechDraw/App/PropertyCenterLineList.h b/src/Mod/TechDraw/App/PropertyCenterLineList.h
index d42bb0bec7..a4ce6ef034 100644
--- a/src/Mod/TechDraw/App/PropertyCenterLineList.h
+++ b/src/Mod/TechDraw/App/PropertyCenterLineList.h
@@ -47,16 +47,7 @@ class TechDrawExport PropertyCenterLineList: public App::PropertyLists
     TYPESYSTEM_HEADER();
 
 public:
-    /**
-     * A constructor.
-     * A more elaborate description of the constructor.
-     */
     PropertyCenterLineList();
-
-    /**
-     * A destructor.
-     * A more elaborate description of the destructor.
-     */
     virtual ~PropertyCenterLineList();
 
     virtual void setSize(int newSize);
@@ -64,7 +55,7 @@ public:
 
     /** Sets the property
      */
-    void setValue(const CenterLine*);
+    void setValue(CenterLine*);
     void setValues(const std::vector<CenterLine*>&);
 
     /// index operator
diff --git a/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.cpp b/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.cpp
index b1bd9d22c1..8cd243f2ea 100644
--- a/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.cpp
+++ b/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.cpp
@@ -63,14 +63,12 @@ PropertyCosmeticEdgeList::PropertyCosmeticEdgeList()
 
 PropertyCosmeticEdgeList::~PropertyCosmeticEdgeList()
 {
-    for (std::vector<CosmeticEdge*>::iterator it = _lValueList.begin(); it != _lValueList.end(); ++it)
-        if (*it) delete *it;
 }
 
 void PropertyCosmeticEdgeList::setSize(int newSize)
 {
-    for (unsigned int i = newSize; i < _lValueList.size(); i++)
-        delete _lValueList[i];
+//    for (unsigned int i = newSize; i < _lValueList.size(); i++)
+//        delete _lValueList[i];
     _lValueList.resize(newSize);
 }
 
@@ -79,15 +77,14 @@ int PropertyCosmeticEdgeList::getSize(void) const
     return static_cast<int>(_lValueList.size());
 }
 
-void PropertyCosmeticEdgeList::setValue(const CosmeticEdge* lValue)
+
+//_lValueList is not const. so why do we pass a const paramter?
+void PropertyCosmeticEdgeList::setValue(CosmeticEdge* lValue)
 {
     if (lValue) {
         aboutToSetValue();
-        CosmeticEdge* newVal = lValue->clone();
-        for (unsigned int i = 0; i < _lValueList.size(); i++)
-            delete _lValueList[i];
         _lValueList.resize(1);
-        _lValueList[0] = newVal;
+        _lValueList[0] = lValue;
         hasSetValue();
     }
 }
@@ -95,13 +92,9 @@ void PropertyCosmeticEdgeList::setValue(const CosmeticEdge* lValue)
 void PropertyCosmeticEdgeList::setValues(const std::vector<CosmeticEdge*>& lValue)
 {
     aboutToSetValue();
-    std::vector<CosmeticEdge*> oldVals(_lValueList);
     _lValueList.resize(lValue.size());
-    // copy all objects
     for (unsigned int i = 0; i < lValue.size(); i++)
-        _lValueList[i] = lValue[i]->clone();
-    for (unsigned int i = 0; i < oldVals.size(); i++)
-        delete oldVals[i];
+        _lValueList[i] = lValue[i];
     hasSetValue();
 }
 
@@ -115,8 +108,6 @@ PyObject *PropertyCosmeticEdgeList::getPyObject(void)
 
 void PropertyCosmeticEdgeList::setPyObject(PyObject *value)
 {
-    // check container of this property to notify about changes
-
     if (PySequence_Check(value)) {
         Py_ssize_t nSize = PySequence_Size(value);
         std::vector<CosmeticEdge*> values;
diff --git a/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.h b/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.h
index 4b36524d3c..df1c07179c 100644
--- a/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.h
+++ b/src/Mod/TechDraw/App/PropertyCosmeticEdgeList.h
@@ -64,7 +64,8 @@ public:
 
     /** Sets the property
      */
-    void setValue(const CosmeticEdge*);
+/*    void setValue(const CosmeticEdge*);*/
+    void setValue(CosmeticEdge*);
     void setValues(const std::vector<CosmeticEdge*>&);
 
     /// index operator
diff --git a/src/Mod/TechDraw/App/PropertyCosmeticVertexList.cpp b/src/Mod/TechDraw/App/PropertyCosmeticVertexList.cpp
index bb0bf12335..21176b2ad3 100644
--- a/src/Mod/TechDraw/App/PropertyCosmeticVertexList.cpp
+++ b/src/Mod/TechDraw/App/PropertyCosmeticVertexList.cpp
@@ -63,8 +63,6 @@ PropertyCosmeticVertexList::PropertyCosmeticVertexList()
 
 PropertyCosmeticVertexList::~PropertyCosmeticVertexList()
 {
-    for (std::vector<CosmeticVertex*>::iterator it = _lValueList.begin(); it != _lValueList.end(); ++it)
-        if (*it) delete *it;
 }
 
 void PropertyCosmeticVertexList::setSize(int newSize)
@@ -79,15 +77,12 @@ int PropertyCosmeticVertexList::getSize(void) const
     return static_cast<int>(_lValueList.size());
 }
 
-void PropertyCosmeticVertexList::setValue(const CosmeticVertex* lValue)
+void PropertyCosmeticVertexList::setValue(CosmeticVertex* lValue)
 {
     if (lValue) {
         aboutToSetValue();
-        CosmeticVertex* newVal = lValue->clone();
-        for (unsigned int i = 0; i < _lValueList.size(); i++)
-            delete _lValueList[i];
         _lValueList.resize(1);
-        _lValueList[0] = newVal;
+        _lValueList[0] = lValue;
         hasSetValue();
     }
 }
@@ -95,13 +90,9 @@ void PropertyCosmeticVertexList::setValue(const CosmeticVertex* lValue)
 void PropertyCosmeticVertexList::setValues(const std::vector<CosmeticVertex*>& lValue)
 {
     aboutToSetValue();
-    std::vector<CosmeticVertex*> oldVals(_lValueList);
     _lValueList.resize(lValue.size());
-    // copy all objects
     for (unsigned int i = 0; i < lValue.size(); i++)
-        _lValueList[i] = lValue[i]->clone();
-    for (unsigned int i = 0; i < oldVals.size(); i++)
-        delete oldVals[i];
+        _lValueList[i] = lValue[i];
     hasSetValue();
 }
 
@@ -134,8 +125,6 @@ void PropertyCosmeticVertexList::setPyObject(PyObject *value)
         }
 
         setValues(values);
-//        if (part2d)
-//            part2d->acceptCosmeticVertex();
     }
     else if (PyObject_TypeCheck(value, &(CosmeticVertexPy::Type))) {
         CosmeticVertexPy  *pcObject = static_cast<CosmeticVertexPy*>(value);
diff --git a/src/Mod/TechDraw/App/PropertyCosmeticVertexList.h b/src/Mod/TechDraw/App/PropertyCosmeticVertexList.h
index 6cb2e95922..58ee06a692 100644
--- a/src/Mod/TechDraw/App/PropertyCosmeticVertexList.h
+++ b/src/Mod/TechDraw/App/PropertyCosmeticVertexList.h
@@ -64,7 +64,7 @@ public:
 
     /** Sets the property
      */
-    void setValue(const CosmeticVertex*);
+    void setValue(CosmeticVertex*);
     void setValues(const std::vector<CosmeticVertex*>&);
 
     /// index operator