From 3632886261b4b281b67729a6c9a2be61373e4f4e Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Fri, 4 Sep 2020 17:46:03 +0300
Subject: [PATCH] #19919 [CEA] Group of Edges reported as empty

Make mesh marked by ! sign if after breaking link the referenced shape becomes different from the shape used for meshing before.
---
 src/SMESH_I/SMESH_Mesh_i.cxx | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/SMESH_I/SMESH_Mesh_i.cxx b/src/SMESH_I/SMESH_Mesh_i.cxx
index 4c2ca27c3..97687ae79 100644
--- a/src/SMESH_I/SMESH_Mesh_i.cxx
+++ b/src/SMESH_I/SMESH_Mesh_i.cxx
@@ -2052,8 +2052,7 @@ void SMESH_Mesh_i::ReplaceShape(GEOM::GEOM_Object_ptr theNewGeom)
   bool geomChanged = true;
   GEOM::GEOM_Object_var oldGeom = GetShapeToMesh();
   if ( !theNewGeom->_is_nil() && !oldGeom->_is_nil() )
-    geomChanged = ( //oldGeom->_is_equivalent( theNewGeom ) ||
-                   oldGeom->GetTick() < theNewGeom->GetTick() );
+    geomChanged = ( oldGeom->GetTick() != theNewGeom->GetTick() );
 
   TopoDS_Shape S = _impl->GetShapeToMesh();
   GEOM_Client* geomClient = _gen_i->GetShapeReader();