In the Preference > Keymap
It says Blender v + - So I press + There's a dialog that asks for a name of the new keyconfig preset.
I type a new name, I call it "Swap MMB"
I make the changes in the shortcuts. It behaves like I want. But when I go back to "Blender" in the list, it has also changed to the same modifications I did with "Swap MMB"
Changing from one or the other does not swap the keyconfig. As if they were both the same. If I reset the Blender key config my "swap MMB" also resets. So I must be doing something wrong.
How do I use Add Keyconfig to make my own custom keyconfig and keep Blender's default keyconfig unchanged?