diff --git a/app/mainwindow.cpp b/app/mainwindow.cpp
index 58a7b43..a3f30dc 100644
--- a/app/mainwindow.cpp
+++ b/app/mainwindow.cpp
@@ -146,13 +146,15 @@ void MainWindow::ReplaceObject(si::Object *obj)
 {
   QString s = QFileDialog::getOpenFileName(this, tr("Replace Object"));
   if (!s.isEmpty()) {
-    if (!obj->ReplaceWithFile(
+    if (obj->ReplaceWithFile(
 #ifdef Q_OS_WINDOWS
           s.toStdWString().c_str()
 #else
           s.toUtf8()
 #endif
         )) {
+      static_cast<Panel*>(config_stack_->currentWidget())->ResetData();
+    } else {
       QMessageBox::critical(this, QString(), tr("Failed to open to file \"%1\".").arg(s));
     }
   }
diff --git a/app/panel.cpp b/app/panel.cpp
index a0d5c92..1659efa 100644
--- a/app/panel.cpp
+++ b/app/panel.cpp
@@ -23,6 +23,11 @@ void Panel::SetData(void *data)
   }
 }
 
+void Panel::ResetData()
+{
+  SetData(data_);
+}
+
 void Panel::FinishLayout()
 {
   outer_layout_->addStretch();
diff --git a/app/panel.h b/app/panel.h
index 1c60694..944fe9c 100644
--- a/app/panel.h
+++ b/app/panel.h
@@ -13,6 +13,8 @@ public:
   void *GetData() const { return data_; }
   void SetData(void *data);
 
+  void ResetData();
+
 signals:
 
 protected: