diff --git a/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.cpp b/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.cpp
index a01e6ac570..854a1ffe20 100644
--- a/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.cpp
+++ b/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.cpp
@@ -1,584 +1,585 @@
 /*============================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center (DKFZ)
 All rights reserved.
 
 Use of this source code is governed by a 3-clause BSD license that can be
 found in the LICENSE file.
 
 ============================================================================*/
 
 #include "QmitkSegmentationTaskWidget.h"
 #include "org_mitk_gui_qt_flow_segmentation_Activator.h"
 
 #include <mitkIDataStorageService.h>
 #include <mitkIOUtil.h>
 #include <mitkLabelSetIOHelper.h>
 #include <mitkLabelSetImageHelper.h>
 #include <mitkNodePredicateDataType.h>
 #include <mitkNodePredicateFunction.h>
 #include <mitkRenderingManager.h>
 
 #include <QmitkStaticDynamicSegmentationDialog.h>
 #include <QmitkStyleManager.h>
 
 #include <ui_QmitkSegmentationTaskWidget.h>
 
 #include <QFileSystemWatcher>
 
 #include <filesystem>
 
 namespace
 {
   mitk::DataStorage* GetDataStorage()
   {
     auto* pluginContext = org_mitk_gui_qt_flow_segmentation_Activator::GetContext();
     auto dataStorageServiceReference = pluginContext->getServiceReference<mitk::IDataStorageService>();
 
     if (dataStorageServiceReference)
     {
       auto* dataStorageService = pluginContext->getService<mitk::IDataStorageService>(dataStorageServiceReference);
 
       if (dataStorageService != nullptr)
       {
         auto dataStorageReference = dataStorageService->GetDataStorage();
         pluginContext->ungetService(dataStorageServiceReference);
 
         return dataStorageReference->GetDataStorage();
       }
     }
 
     return nullptr;
   }
 
   std::filesystem::path GetInputLocation(const mitk::BaseData* data)
   {
     std::string result;
 
     if (data != nullptr)
       data->GetPropertyList()->GetStringProperty("MITK.IO.reader.inputlocation", result);
 
     return result;
   }
 
   QString ColorString(const QString& string, const QColor& color, const QColor& backgroundColor = QColor::Invalid)
   {
     if (!color.isValid() && !backgroundColor.isValid())
       return string;
 
     auto result = QStringLiteral("<span style=\"");
     QStringList strings;
 
     if (color.isValid())
       strings << QString("color: %1;").arg(color.name());
 
     if (backgroundColor.isValid())
       strings << QString("background-color: %1;").arg(backgroundColor.name());
 
     result += strings.join(' ') + QString("\">%1</span>").arg(string);
 
     return result;
   }
 }
 
 /* This constructor has three objectives:
  *   1. Do widget initialization that cannot be done in the .ui file
  *   2. Connect signals and slots
  *   3. Explicitly trigger a reset to a valid initial widget state
  */
 QmitkSegmentationTaskWidget::QmitkSegmentationTaskWidget(QWidget* parent)
   : QWidget(parent),
     m_Ui(new Ui::QmitkSegmentationTaskWidget),
     m_FileSystemWatcher(new QFileSystemWatcher(this)),
     m_CurrentSubtaskIndex(0)
 {
   m_Ui->setupUi(this);
 
   m_Ui->selectionWidget->SetDataStorage(GetDataStorage());
   m_Ui->selectionWidget->SetSelectionIsOptional(true);
   m_Ui->selectionWidget->SetEmptyInfo(QStringLiteral("Select a segmentation task"));
   m_Ui->selectionWidget->SetAutoSelectNewNodes(true);
   m_Ui->selectionWidget->SetNodePredicate(mitk::TNodePredicateDataType<mitk::SegmentationTask>::New());
 
   m_Ui->progressBar->setStyleSheet(QString("QProgressBar::chunk { background-color: %1; }").arg(QmitkStyleManager::GetIconAccentColor()));
 
   using Self = QmitkSegmentationTaskWidget;
 
   connect(m_Ui->selectionWidget, &QmitkSingleNodeSelectionWidget::CurrentSelectionChanged, this, &Self::OnSelectionChanged);
   connect(m_Ui->previousButton, &QToolButton::clicked, this, &Self::OnPreviousButtonClicked);
   connect(m_Ui->nextButton, &QToolButton::clicked, this, &Self::OnNextButtonClicked);
   connect(m_Ui->loadButton, &QPushButton::clicked, this, &Self::OnLoadButtonClicked);
 
   connect(m_FileSystemWatcher, &QFileSystemWatcher::directoryChanged, this, &Self::OnResultDirectoryChanged);
 
   this->OnSelectionChanged(m_Ui->selectionWidget->GetSelectedNodes());
 }
 
 QmitkSegmentationTaskWidget::~QmitkSegmentationTaskWidget()
 {
 }
 
 mitk::SegmentationTask* QmitkSegmentationTaskWidget::GetTask() const
 {
   return m_Task;
 }
 
 std::optional<size_t> QmitkSegmentationTaskWidget::GetActiveSubtaskIndex() const
 {
   return m_ActiveSubtaskIndex;
 }
 
 size_t QmitkSegmentationTaskWidget::GetCurrentSubtaskIndex() const
 {
   return m_CurrentSubtaskIndex;
 }
 
 /* Make sure that the widget transitions into a valid state whenever the
  * selection changes.
  */
 void QmitkSegmentationTaskWidget::OnSelectionChanged(const QmitkSingleNodeSelectionWidget::NodeList& nodes)
 {
   this->ResetControls();
 
   if (!nodes.empty())
   {
-    auto task = dynamic_cast<mitk::SegmentationTask*>(nodes.front()->GetData());
+    m_TaskNode = nodes.front();
+    auto task = dynamic_cast<mitk::SegmentationTask*>(m_TaskNode->GetData());
 
     if (task != nullptr)
     {
       this->OnTaskChanged(task);
       return;
     }
   }
 
+  this->UnloadSubtasks();
   this->SetTask(nullptr);
+
+  m_TaskNode = nullptr;
 }
 
 /* Reset all controls to a default state as a common basis for further
  * adjustments.
  */
 void QmitkSegmentationTaskWidget::ResetControls()
 {
   m_Ui->progressBar->setEnabled(false);
   m_Ui->progressBar->setFormat("");
   m_Ui->progressBar->setValue(0);
   m_Ui->progressBar->setMaximum(1);
 
   m_Ui->previousButton->setEnabled(false);
 
   m_Ui->loadButton->setEnabled(false);
   m_Ui->loadButton->setText(QStringLiteral("Load subtask"));
 
   m_Ui->nextButton->setEnabled(false);
 
   m_Ui->detailsLabel->clear();
 }
 
 /* If the segmentation task changed, reset all member variables to expected
  * default values and reset the file system watcher.
  */
 void QmitkSegmentationTaskWidget::SetTask(mitk::SegmentationTask* task)
 {
   if (m_Task != task)
   {
     m_Task = task;
 
     this->SetCurrentSubtaskIndex(0);
     this->ResetFileSystemWatcher();
   }
 }
 
 void QmitkSegmentationTaskWidget::ResetFileSystemWatcher()
 {
   {
     auto paths = m_FileSystemWatcher->directories();
 
     if (!paths.empty())
       m_FileSystemWatcher->removePaths(paths);
   }
 
   if (m_Task.IsNotNull())
   {
     for (const auto& subtask : *m_Task)
     {
       auto resultPath = m_Task->GetAbsolutePath(subtask.GetResult()).remove_filename();
 
       if (!std::filesystem::exists(resultPath))
       {
         try
         {
           std::filesystem::create_directories(resultPath);
         }
         catch (const std::filesystem::filesystem_error& e)
         {
           MITK_ERROR << e.what();
         }
       }
 
       if (std::filesystem::exists(resultPath))
         m_FileSystemWatcher->addPath(QString::fromStdString(resultPath.string()));
     }
   }
 }
 
 void QmitkSegmentationTaskWidget::OnResultDirectoryChanged(const QString&)
 {
   this->UpdateProgressBar();
   this->UpdateDetailsLabel();
 }
 
 void QmitkSegmentationTaskWidget::UpdateProgressBar()
 {
   int progress = 0;
 
   for (size_t i = 0; i < m_Task->GetNumberOfSubtasks(); ++i)
   {
     if (m_Task->IsDone(i))
       ++progress;
   }
 
   m_Ui->progressBar->setValue(progress);
 }
 
 /* Provided that a valid segmentation task is currently selected and the
  * widget is in its default state, update all controls accordingly.
  */
 void QmitkSegmentationTaskWidget::OnTaskChanged(mitk::SegmentationTask* task)
 {
   this->SetTask(task);
 
   const auto numSubtasks = task->GetNumberOfSubtasks();
 
   m_Ui->progressBar->setMaximum(numSubtasks);
   m_Ui->progressBar->setFormat(QStringLiteral("%v/%m Subtask(s) done"));
   m_Ui->progressBar->setEnabled(true);
 
   this->UpdateProgressBar();
 
   m_Ui->loadButton->setEnabled(true);
 
   if (numSubtasks > 1)
     m_Ui->nextButton->setEnabled(true);
 
   this->OnSubtaskChanged();
 }
 
 /* If possible, change the currently displayed subtask to the previous subtask.
  * Enable/disable navigation buttons according to the subtask's position.
  */
 void QmitkSegmentationTaskWidget::OnPreviousButtonClicked()
 {
   const auto maxIndex = m_Task->GetNumberOfSubtasks() - 1;
 
   if (m_CurrentSubtaskIndex != 0)
   {
     this->SetCurrentSubtaskIndex(m_CurrentSubtaskIndex - 1);
     this->OnSubtaskChanged();
   }
 
   if (m_CurrentSubtaskIndex == 0)
     m_Ui->previousButton->setEnabled(false);
 
   if (m_CurrentSubtaskIndex < maxIndex)
     m_Ui->nextButton->setEnabled(true);
 }
 
 /* If possible, change the currently displayed subtask to the next subtask.
  * Enable/disable navigation buttons according to the subtask's position.
  */
 void QmitkSegmentationTaskWidget::OnNextButtonClicked()
 {
   const auto maxIndex = m_Task->GetNumberOfSubtasks() - 1;
 
   if (m_CurrentSubtaskIndex < maxIndex)
   {
     this->SetCurrentSubtaskIndex(m_CurrentSubtaskIndex + 1);
     this->OnSubtaskChanged();
   }
 
   if (m_CurrentSubtaskIndex != 0)
     m_Ui->previousButton->setEnabled(true);
 
   if (m_CurrentSubtaskIndex >= maxIndex)
     m_Ui->nextButton->setEnabled(false);
 }
 
 /* Update affected controls when the currently displayed subtask changed.
  */
 void QmitkSegmentationTaskWidget::OnSubtaskChanged()
 {
   this->UpdateLoadButton();
   this->UpdateDetailsLabel();
 }
 
 /* Update the load button according to the currently displayed subtask.
  */
 void QmitkSegmentationTaskWidget::UpdateLoadButton()
 {
   bool active = m_ActiveSubtaskIndex.has_value() && m_ActiveSubtaskIndex.value() == m_CurrentSubtaskIndex;
 
   auto text = !active
     ? QStringLiteral("Load subtask")
     : QStringLiteral("Subtask");
 
   if (m_Task.IsNotNull())
   {
     text += QString(" %1/%2").arg(m_CurrentSubtaskIndex + 1).arg(m_Task->GetNumberOfSubtasks());
 
     const auto subtaskName = m_Task->GetName(m_CurrentSubtaskIndex);
 
     if (!subtaskName.empty())
       text += QStringLiteral(":\n") + QString::fromStdString(subtaskName);
   }
 
   m_Ui->loadButton->setDisabled(active);
   m_Ui->loadButton->setText(text);
 }
 
 /* Update the details label according to the currently display subtask.
  * The text is composed of the status of the subtask and a variable number
  * of text blocks according to the optional values provided by the subtask.
  */
 void QmitkSegmentationTaskWidget::UpdateDetailsLabel()
 {
   bool active = m_ActiveSubtaskIndex.has_value() && m_ActiveSubtaskIndex.value() == m_CurrentSubtaskIndex;
   bool isDone = m_Task->IsDone(m_CurrentSubtaskIndex);
 
   auto details = QString("<p><b>Status: %1</b> / <b>").arg(active
     ? ColorString("Active", Qt::white, QColor(Qt::green).darker())
     : ColorString("Inactive", Qt::white, QColor(Qt::red).darker()));
 
   details += QString("%1</b></p>").arg(isDone
     ? ColorString("Done", Qt::white, QColor(Qt::green).darker())
     : ColorString("Undone", Qt::white, QColor(Qt::red).darker()));
 
   const auto description = m_Task->GetDescription(m_CurrentSubtaskIndex);
 
   if (!description.empty())
     details += QString("<p><b>Description:</b> %1</p>").arg(QString::fromStdString(description));
 
   QStringList stringList;
 
   const auto image = m_Task->GetImage(m_CurrentSubtaskIndex);
 
   if (!image.empty())
     stringList << QString("<b>Image:</b> %1").arg(QString::fromStdString(image));
 
   const auto segmentation = m_Task->GetSegmentation(m_CurrentSubtaskIndex);
 
   if (!segmentation.empty())
     stringList << QString("<b>Segmentation:</b> %1").arg(QString::fromStdString(segmentation));
 
   const auto labelName = m_Task->GetLabelName(m_CurrentSubtaskIndex);
 
   if (!labelName.empty())
     stringList << QString("<b>Label name:</b> %1").arg(QString::fromStdString(labelName));
 
   const auto preset = m_Task->GetPreset(m_CurrentSubtaskIndex);
 
   if (!preset.empty())
     stringList << QString("<b>Label set preset:</b> %1").arg(QString::fromStdString(preset));
 
   if (!stringList.empty())
     details += QString("<p>%1</p>").arg(stringList.join(QStringLiteral("<br>")));
 
   m_Ui->detailsLabel->setText(details);
 }
 
 /* Load/activate the currently displayed subtask. Unload all data nodes from
  * previously active subtasks first, but spare and reuse the image if possible.
  */
 void QmitkSegmentationTaskWidget::OnLoadButtonClicked()
 {
   m_Ui->loadButton->setEnabled(false);
   QApplication::setOverrideCursor(QCursor(Qt::BusyCursor));
 
   auto* imageNode = this->GetImageDataNode(m_CurrentSubtaskIndex);
 
   this->UnloadSubtasks(imageNode);
   this->LoadSubtask(imageNode);
 
   this->OnSubtaskChanged();
   QApplication::restoreOverrideCursor();
 }
 
 /* If present, return the image data node for the currently displayed subtask.
  * Otherwise, return nullptr.
  */
 mitk::DataNode* QmitkSegmentationTaskWidget::GetImageDataNode(size_t index) const
 {
-  auto taskNode = m_Ui->selectionWidget->GetSelectedNode();
   const auto imagePath = m_Task->GetAbsolutePath(m_Task->GetImage(index));
 
-  auto imageNodes = GetDataStorage()->GetDerivations(taskNode, mitk::NodePredicateFunction::New([imagePath](const mitk::DataNode* node) {
+  auto imageNodes = GetDataStorage()->GetDerivations(m_TaskNode, mitk::NodePredicateFunction::New([imagePath](const mitk::DataNode* node) {
     return imagePath == GetInputLocation(node->GetData());
   }));
 
   return !imageNodes->empty()
     ? imageNodes->front()
     : nullptr;
 }
 
 /* If present, return the segmentation data node for the currently displayed
  * subtask. Otherwise, return nullptr.
  */
 mitk::DataNode* QmitkSegmentationTaskWidget::GetSegmentationDataNode(size_t index) const
 {
   const auto* imageNode = this->GetImageDataNode(index);
 
   if (imageNode != nullptr)
   {
     auto segmentations = GetDataStorage()->GetDerivations(imageNode, mitk::TNodePredicateDataType<mitk::LabelSetImage>::New());
 
     if (!segmentations->empty())
       return segmentations->front();
   }
 
   return nullptr;
 }
 
 /* Unload all subtask data nodes but spare the passed image data node.
  */
 void QmitkSegmentationTaskWidget::UnloadSubtasks(const mitk::DataNode* skip)
 {
   mitk::DataStorage::Pointer dataStorage = GetDataStorage();
-  auto taskNode = m_Ui->selectionWidget->GetSelectedNode();
 
-  auto imageNodes = dataStorage->GetDerivations(taskNode, mitk::TNodePredicateDataType<mitk::Image>::New());
+  auto imageNodes = dataStorage->GetDerivations(m_TaskNode, mitk::TNodePredicateDataType<mitk::Image>::New());
 
   for (auto imageNode : *imageNodes)
   {
     dataStorage->Remove(dataStorage->GetDerivations(imageNode, nullptr, false));
 
     if (imageNode != skip)
       dataStorage->Remove(imageNode);
   }
 
   this->SetActiveSubtaskIndex(std::nullopt);
 }
 
 /* Load/activate the currently displayed subtask. The subtask must specify
  * an image. The segmentation is either created from scratch with an optional
  * name for the first label, possibly based on a label set preset specified by
  * the subtask, or loaded as specified by the subtask. If a result file does
  * exist, it is chosen as segmentation instead.
  */
 void QmitkSegmentationTaskWidget::LoadSubtask(mitk::DataNode::Pointer imageNode)
 {
   mitk::DataStorage::Pointer dataStorage = GetDataStorage();
-  auto taskNode = m_Ui->selectionWidget->GetSelectedNode();
 
   const auto imagePath = m_Task->GetAbsolutePath(m_Task->GetImage(m_CurrentSubtaskIndex));
   mitk::Image::Pointer image;
 
   const auto resultPath = m_Task->GetAbsolutePath(m_Task->GetResult(m_CurrentSubtaskIndex));
 
   const auto segmentationPath = m_Task->GetAbsolutePath(m_Task->GetSegmentation(m_CurrentSubtaskIndex));
   mitk::LabelSetImage::Pointer segmentation;
   mitk::DataNode::Pointer segmentationNode;
 
   const auto labelName = m_Task->GetLabelName(m_CurrentSubtaskIndex);
 
   const auto presetPath = m_Task->GetAbsolutePath(m_Task->GetPreset(m_CurrentSubtaskIndex));
 
   try
   {
     if (imageNode.IsNull())
       image = mitk::IOUtil::Load<mitk::Image>(imagePath.string());
 
     if (std::filesystem::exists(resultPath))
     {
       segmentation = mitk::IOUtil::Load<mitk::LabelSetImage>(resultPath.string());
     }
     else if (!segmentationPath.empty())
     {
       segmentation = mitk::IOUtil::Load<mitk::LabelSetImage>(segmentationPath.string());
     }
   }
   catch (const mitk::Exception&)
   {
     return;
   }
 
   if (imageNode.IsNull())
   {
     imageNode = mitk::DataNode::New();
     imageNode->SetData(image);
 
-    dataStorage->Add(imageNode, taskNode);
+    dataStorage->Add(imageNode, m_TaskNode);
 
     mitk::RenderingManager::GetInstance()->InitializeViews(image->GetTimeGeometry());
   }
   else
   {
     image = static_cast<mitk::Image*>(imageNode->GetData());
   }
 
   auto imageName = "Subtask " + std::to_string(m_CurrentSubtaskIndex + 1);
   imageNode->SetName(imageName);
 
   auto segmentationName = imageName;
 
   if (segmentation.IsNull())
   {
     mitk::Image::ConstPointer templateImage = image;
 
     if (templateImage->GetDimension() > 3)
     {
       QmitkStaticDynamicSegmentationDialog dialog(this);
       dialog.SetReferenceImage(templateImage);
       dialog.exec();
 
       templateImage = dialog.GetSegmentationTemplate();
     }
 
     segmentationNode = mitk::LabelSetImageHelper::CreateNewSegmentationNode(imageNode, templateImage, segmentationName);
     segmentation = static_cast<mitk::LabelSetImage*>(segmentationNode->GetData());
 
     if (!presetPath.empty())
     {
       mitk::LabelSetIOHelper::LoadLabelSetImagePreset(presetPath.string(), segmentation);
     }
     else
     {
       auto label = mitk::LabelSetImageHelper::CreateNewLabel(segmentation);
 
       if (!labelName.empty())
         label->SetName(labelName);
 
       segmentation->GetActiveLabelSet()->AddLabel(label);
     }
 
     dataStorage->Add(segmentationNode, imageNode);
   }
   else
   {
     segmentationNode = mitk::DataNode::New();
     segmentationNode->SetName(segmentationName);
     segmentationNode->SetData(segmentation);
 
     dataStorage->Add(segmentationNode, imageNode);
   }
 
   this->SetActiveSubtaskIndex(m_CurrentSubtaskIndex);
 }
 
 void QmitkSegmentationTaskWidget::SetActiveSubtaskIndex(const std::optional<size_t>& index)
 {
   if (m_ActiveSubtaskIndex != index)
   {
     m_ActiveSubtaskIndex = index;
     emit ActiveSubtaskChanged(m_ActiveSubtaskIndex);
   }
 }
 
 void QmitkSegmentationTaskWidget::SetCurrentSubtaskIndex(size_t index)
 {
   if (m_CurrentSubtaskIndex != index)
   {
     m_CurrentSubtaskIndex = index;
     emit CurrentSubtaskChanged(m_CurrentSubtaskIndex);
   }
 }
diff --git a/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.h b/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.h
index b41fafc54c..eb33b57b63 100644
--- a/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.h
+++ b/Plugins/org.mitk.gui.qt.flow.segmentation/src/internal/QmitkSegmentationTaskWidget.h
@@ -1,77 +1,78 @@
 /*============================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center (DKFZ)
 All rights reserved.
 
 Use of this source code is governed by a 3-clause BSD license that can be
 found in the LICENSE file.
 
 ============================================================================*/
 
 #ifndef QmitkSegmentationTaskWidget_h
 #define QmitkSegmentationTaskWidget_h
 
 #include <mitkSegmentationTask.h>
 
 #include <MitkSegmentationUIExports.h>
 
 #include <QmitkSingleNodeSelectionWidget.h>
 
 #include <QWidget>
 
 #include <optional>
 
 class QFileSystemWatcher;
 
 namespace Ui
 {
   class QmitkSegmentationTaskWidget;
 }
 
 class QmitkSegmentationTaskWidget : public QWidget
 {
   Q_OBJECT
 
 public:
   explicit QmitkSegmentationTaskWidget(QWidget* parent = nullptr);
   ~QmitkSegmentationTaskWidget() override;
 
   mitk::SegmentationTask* GetTask() const;
   std::optional<size_t> GetActiveSubtaskIndex() const;
   size_t GetCurrentSubtaskIndex() const;
   mitk::DataNode* GetSegmentationDataNode(size_t index) const;
 
 signals:
   void ActiveSubtaskChanged(const std::optional<size_t>& index);
   void CurrentSubtaskChanged(size_t index);
 
 private:
   void OnSelectionChanged(const QmitkSingleNodeSelectionWidget::NodeList& nodes);
   void ResetControls();
   void SetTask(mitk::SegmentationTask* task);
   void ResetFileSystemWatcher();
   void OnResultDirectoryChanged(const QString&);
   void UpdateProgressBar();
   void OnTaskChanged(mitk::SegmentationTask* task);
   void OnPreviousButtonClicked();
   void OnNextButtonClicked();
   void OnSubtaskChanged();
   void UpdateLoadButton();
   void UpdateDetailsLabel();
   void OnLoadButtonClicked();
   mitk::DataNode* GetImageDataNode(size_t index) const;
   void UnloadSubtasks(const mitk::DataNode* skip = nullptr);
   void LoadSubtask(mitk::DataNode::Pointer imageNode = nullptr);
   void SetActiveSubtaskIndex(const std::optional<size_t>& index);
   void SetCurrentSubtaskIndex(size_t index);
 
   Ui::QmitkSegmentationTaskWidget* m_Ui;
   QFileSystemWatcher* m_FileSystemWatcher;
   mitk::SegmentationTask::Pointer m_Task;
+  mitk::DataNode::Pointer m_TaskNode;
   size_t m_CurrentSubtaskIndex;
   std::optional<size_t> m_ActiveSubtaskIndex;
 };
 
 #endif