No one else seems to care about this issue. I'm guessing that's because most people who sell population are in the process of stripping the country. Or, maybe you sold one or two million and are having trouble with your workers and keeping a stable population but don't realize what the source of the problem is. Or, possibly I'm the only one experiencing this problem.
What problem? I have six countries that are losing from 7,000 to 20,000 pop per month due to negative migration. Why? I believe it is because I sold a few million pop from those six countries in mid-November, and the new migration rules include an ongoing migration penalty when you sell population. Is it a big deal? 20,000 per game month, that's over 2 million per real month. That's up to 8 gc per month per country involved, sort of.
Why not just get the migration index up over 55, won't you get positive migration then? Well, that's difficult when you're losing workers. I did it with one country, Paradise Lost, the MI is now up to 56. It was losing 20,000 per game month, now "only" 16,000. Perhaps if I get the MI to 60 it will stabilize.
Is this a permanent feature of a country, or does it wear off after a while? So far it doesn't seem to be wearing off, after 6 real weeks.
Is anyone else experiencing, or not experiencing, this problem? I mean, if you've sold any population in the past month or so, could you describe what your migration numbers are, and what the MI currently is? And what those values had been if you were watching them before?