Population Transfer Question

Can I Pick your brain with a noobie question on population transfers?

If I have 3 countries (A,B,and C). And...

Country A transfers 500 workers to B, and receives 1000 in return. Then...

Country A transfers 500 workers to C, and receives 1000 in return.

How much more population can each transfer to another country in the Empire?

If the 400k is applied on both sides, Country A would be able to transfer 397,000 more.

If countries are only charged the amount sent, Country A could send 399,000 more.

A small distinction, but could really affect the transfer rate when trying to grow.

Many thanks for your time and consideration,
M. Ney

It goes by 400,000 max in any country. If you trade, say, 300,000 LLWs for x,000 HTEngineers in one country, any country in your empire can trade only a maximum of 100,000 more workers after that. First country that gets the total to 400,000 hits the limit, in other words.

Thanks Mac. (and thanks to Supersoldier.)

Was hoping to get above 250k growth per country. Now with 4 keepers and another on the way, got to find some way to streamline, else spend all my game time doing transfers.