Copy/paste the relevant items in the ini-file is not an option?
No, because lat/lon coordinates of the vehicles are saved as absolute values, not relative to their parking so, what the copy & paste feature is supposed to do, is precisely do all the calculation for you, and create a "copy" of a parking over another one (or many of them), by keeping the vehicles in the same relative position.
And, you should be offered a way to choose what to paste (the jetway, how many of them, a vehicle, all vehicles, everything, etc.), so a real proper Copy & Paste feature is required.