fix grace export bugs; closes #155

src/gui_qt/graphs/graphwindow.py

@@ -690,6 +690,7 @@ class QGraphWindow(QtWidgets.QGraphicsView, Ui_GraphWindow):
             'plots': (self.real_button.isChecked(), self.imag_button.isChecked(), self.error_button.isChecked()),
             'children': self.sets,
             'active': self._active,
+            'invert': (self.plotItem.vb.state['xInverted'], self.plotItem.vb.state['yInverted']),
         }
 
         in_legend = []