Export of EF Typhoon – share of income

I currently live in a country that will soon look into buying a new fighter (i.e. Switzerland). As politics/diplomatic relations will play a role in any such purchase (if it materialises), I was wondering in the case of the EF where the money actually goes, and if it goes to only one of the partner.

In other words, when the EF is exported, does 100 % of the income go only to the country exporting the plane physically (i.e. 100% of the income to the country from whose production line the EF come (for instance, 100% to Germany in the case of Austria, 100% to the UK in the case of Saudi Arabia)), or is part of the income redistributed among the four participating countries (because of initial investments, IP rights…)??

And then, is it remotely possible to imagine splitting an order among several EF producers (for instance, so many from Germany and so many from Italy)??

Thanks for the answers,