move iteration of deleting sets inside undo, fixes #36

src/gui_qt/main/management.py

@@ -624,6 +624,7 @@ class UpperManagement(QtCore.QObject):
             if not graph_id:
                 graph_id = ''
 
+            # TODO add flag that new window will not get focus, because it messes up the data_table in fitwindow
             self.newData.emit(p_id_list, graph_id)
 
     def save_fit_parameter(self, fname: str | pathlib.Path, fit_sets: list[str] = None):