I tried to drag two DataGridViews and a BindingNavigator to a windows form. My testing result is that there is a appending button in the BindingNavigator control, which can be used to add Button/Label/SplitButton/DropDownButton/Separator/CombBox/TextBox/ProgressBar.
I can't find any "Save" button in the BindingNavigator control. Did you add a button named "Save" in the BindingNavigator control? Can you clarify how to repro your issues in details?
If you would like to add "Save" button to the BindingNavigator control, try to check out this document about "How to: Add Load, Save, and Cancel Buttons to the Windows Forms BindingNavigator Control" for reference -http://http://msdn2.microsoft.com/en-us/library/safa4957(vs.80).aspx
My suggestion for your concern is to try to check out this BindingNavigator Control document for details - http://msdn2.microsoft.com/en-us/library/b9y7cz6d(vs.80).aspx
Hope this helps,
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