[vtkusers] PedigreeIds arrays don't propogate accross a pipeline

[Jenya Burstein]

Hello,

I am having a difficulty of retrieving a pedigree array from a filter's
output.


m_tableToPolyData->GetOutput()->GetAttributes(vtkDataObject::POINT)->SetPedigreeIds(
      m_tableToPolyData->GetOutput()->GetPointData()->GetAbstractArray(0));
  vtkSmartPointer<vtkClipPolyData> anotherFilter =
vtkSmartPointer<vtkClipPolyData>::New();
  anotherFilter->SetInputConnection(m_tableToPolyData->GetOutputPort());
  anotherFilter->Update();

  vtkAbstractArray* origPedigreeIds =
m_tableToPolyData->GetOutput()->GetAttributes(vtkDataObject::POINT)->GetPedigreeIds();
  //origPedigreeIds comes back correctly.
  vtkAbstractArray* pedigreeIds =
anotherFilter->GetOutput()->GetAttributes(vtkDataObject::POINT)->GetPedigreeIds();
  //pedigreeIds comes back as NULL

Any help is greatly appreciated,
Jenya
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