iTerm2: Saving Global Shortcut Keys
You can save different settings by going to the Profile Tab and creating a new Profile. It will have a tab at the right for setting key settings, and you can select/deselect that profile to enable your customized tabs.



If you want/need to edit the mappings en-masse, there is a file called PresetKeyMappings.plist inside the Resources folder in the app. (Right click on app, choose "Show Package Contents".)

Within the Profiles tab, there is also a pop-up menu at the bottom for bulk copying presets from a given profile. (Selected in the image...)