From e632e9feb8a9dd56d5a879f2afef636cc159095e Mon Sep 17 00:00:00 2001
From: Abdullah Tahiri <abdullah.tahiri.yo@gmail.com>
Date: Sat, 22 Jun 2019 23:12:19 +0200
Subject: [PATCH] Sketcher: Fix carbon copy construction points

=============================================

fixes #3926

Points made of construction type are special non-constrainable points, such as (current) bspline knots.

This was not intended in Carbon Copy.
---
 src/Mod/Sketcher/App/SketchObject.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index e7b95f71db..fd284e45c4 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -5197,7 +5197,7 @@ int SketchObject::carbonCopy(App::DocumentObject * pObj, bool construction)
 
     for (std::vector<Part::Geometry *>::const_iterator it=svals.begin(); it != svals.end(); ++it){
         Part::Geometry *geoNew = (*it)->copy();
-        if(construction) {
+        if(construction && geoNew->getTypeId() != Part::GeomPoint::getClassTypeId()) {
             geoNew->Construction = true;
         }
         newVals.push_back(geoNew);