diff --git a/src/gui_qt/data/datawidget/datawidget.py b/src/gui_qt/data/datawidget/datawidget.py
index c40089a..cf4b741 100644
--- a/src/gui_qt/data/datawidget/datawidget.py
+++ b/src/gui_qt/data/datawidget/datawidget.py
@@ -287,13 +287,20 @@ class DataTree(QtWidgets.QTreeWidget):
             for idx in self.selectedIndexes():
                 if idx.column() == 1:
                     continue
+
                 item = self.itemFromIndex(idx)
                 if item.parent() is None:
                     for c_i in range(item.childCount()):
-                        rm_sets.append(item.child(c_i).data(0, QtCore.Qt.UserRole))
+                        # add sets inside graph to removal
+                        child_data = item.child(c_i).data(0, QtCore.Qt.UserRole)
+                        if child_data not in rm_sets:
+                            rm_sets.append(child_data)
                     rm_graphs.append(item.data(0, QtCore.Qt.UserRole))
+
                 else:
-                    rm_sets.append(item.data(0, QtCore.Qt.UserRole))
+                    item_data = item.data(0, QtCore.Qt.UserRole)
+                    if item_data not in rm_sets:
+                        rm_sets.append(item_data)
 
             # self.deleteItem.emit(rm_sets+rm_graphs)
             self.management.delete_sets(rm_sets+rm_graphs)
diff --git a/src/gui_qt/main/management.py b/src/gui_qt/main/management.py
index 3f2ccc0..6d71fb2 100644
--- a/src/gui_qt/main/management.py
+++ b/src/gui_qt/main/management.py
@@ -291,8 +291,10 @@ class UpperManagement(QtCore.QObject):
             if k in self.data:
                 cmd = DeleteCommand(self.data, k, self.newData, self.deleteData)
                 self.undostack.push(cmd)
-            else:
+            elif k in self.graphs:
                 rm_graphs.append(k)
+            else:
+                logger.warning(f'delete_sets: {k} is not in data or graph found')
 
         for k in rm_graphs:
             cmd = DeleteGraphCommand(self.graphs, k, self.restoreGraph, self.deleteGraph)