As a newcomer to the JetBrains product family (using IntelliJ IDEA Community, RubyMine & PyCharm), I am customizing my keyboard bindings. Starting from the "Mac OS X (10.5+)" keymap, I created a custom keymap. Within this keymap, I was experimenting with a custom keyboard shortcut. Since I was not happy with the result, I tried to undo setting this custom keyboard shortcut (only this one and leave my other customizations as-is). The keyboard shortcut is removed, but the action remains highlighted in blue, indicating there is a change compared to the parent keymap.
So, without dropping my keymap altogether, how can tell IntelliJ IDEA to forget about this modification and use the keyboard shortcut from the parent keymap for this action?