When you make manual changes to the Org Units such as color changes, custom name changes, or structure changes, these are recorded in the Org Unit Changes screen.
The order in which the changes displayed in the list in the order that they are processed each time an Org Unit Import runs, so these are effectively a way of making custom changes over the top of the Org Unit Import to fix up things that may not be quite right with the import. If you decide you do not want the change you can delete it from the list.
Navigate toAdmin Settings > Reference Data > Org Hierarchy. The Org Unit Hierarchy screen displays.
For the change, you want to remove, check the change(s).
Click the Delete icon. The "Are you sure you want to delete the selected change?" dialog displays.