From 870b612035b040527741030e36a438703ecad0f2 Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Mon, 16 Sep 2019 15:16:31 +0300
Subject: [PATCH] Save in export to XAO BRep with free top level shape.

---
 src/GeomAlgoAPI/GeomAlgoAPI_XAOExport.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/GeomAlgoAPI/GeomAlgoAPI_XAOExport.cpp b/src/GeomAlgoAPI/GeomAlgoAPI_XAOExport.cpp
index 22abe96f8..9f0983fe2 100644
--- a/src/GeomAlgoAPI/GeomAlgoAPI_XAOExport.cpp
+++ b/src/GeomAlgoAPI/GeomAlgoAPI_XAOExport.cpp
@@ -67,7 +67,14 @@ bool XAOExport(const std::string& theFileName,
   }
 
   try {
+    XAO::BrepGeometry* aGeometry = dynamic_cast<XAO::BrepGeometry*>(theXao->getGeometry());
+    TopoDS_Shape aShape = aGeometry->getTopoDS_Shape();
+    bool aWasFree = aShape.Free(); // make top level topology free, same as imported
+    if (!aWasFree)
+      aShape.Free(Standard_True);
     XAO::XaoExporter::saveToFile(theXao, theFileName, "");
+    if (!aWasFree)
+      aShape.Free(Standard_False);
   } catch (XAO::XAO_Exception& e) {
     theError = e.what();
     return false;
-- 
2.39.2