In the graph view, the reload button is not working for the dropdown he is placed (Filter) he is deleting all settings in the dropdowns underneath too. The GUI teels me he is next to the Filter so it will delet the Filter only.
The other point is I find it dangerous that settings which should stay in longterm (all of the dropdowns belong to them except Filter) are deleted so easily. I would find it much better if a dialog is opening and asking me if I really want to delet my settings.
Proposed solution
Put the button in the dropdown menue so I see him only if I open the dropdown. We will need the button in every dropdown than. Another way would be to have a button bar above the top dropdown (Filter), so it stays above all dropdowns and look like it works for somethin specific.