diff --git a/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp b/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp
index e3a74d0bf..f93176ea3 100644
--- a/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp
+++ b/sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp
@@ -62,9 +62,14 @@ void UnGroupTerminalsCommand::undo()
 {
 	if (m_terminal_strip)
 	{
+			//First, re-group all terminals
 		for (const auto &key : m_physical_real_H.keys()) {
 			m_terminal_strip->groupTerminals(key, m_physical_real_H.value(key));
 		}
+			//Second, set level.
+		for (const auto &pair : qAsConst(m_real_t_level)) {
+			m_terminal_strip->setLevel(pair.first, pair.second);
+		}
 	}
 }
 
@@ -82,7 +87,7 @@ void UnGroupTerminalsCommand::setUp(const QVector<QSharedPointer<RealTerminal>>
 {
 	for (const auto &rt_ : to_ungroup)
 	{
-		auto phy_t = m_terminal_strip->physicalTerminal(rt_.toWeakRef());
+		auto phy_t = m_terminal_strip->physicalTerminal(rt_);
 		if (phy_t)
 		{
 				//Physical have only one real terminal, no need to ungroup it
@@ -93,6 +98,8 @@ void UnGroupTerminalsCommand::setUp(const QVector<QSharedPointer<RealTerminal>>
 			auto vector_ = m_physical_real_H.value(phy_t);
 			vector_.append(rt_);
 			m_physical_real_H.insert(phy_t, vector_);
+
+			m_real_t_level.append(qMakePair(rt_, phy_t->levelOf(rt_)));
 		}
 	}
 }
diff --git a/sources/TerminalStrip/UndoCommand/groupterminalscommand.h b/sources/TerminalStrip/UndoCommand/groupterminalscommand.h
index 6267d3db6..0b24f8f4a 100644
--- a/sources/TerminalStrip/UndoCommand/groupterminalscommand.h
+++ b/sources/TerminalStrip/UndoCommand/groupterminalscommand.h
@@ -64,6 +64,7 @@ class UnGroupTerminalsCommand : public QUndoCommand
 	private:
 		QPointer<TerminalStrip> m_terminal_strip;
 		QHash <QSharedPointer<PhysicalTerminal>, QVector<QSharedPointer<RealTerminal>>> m_physical_real_H;
+		QVector<QPair<QSharedPointer<RealTerminal>, int>> m_real_t_level;
 };
 
 #endif // GROUPTERMINALSCOMMAND_H