The idea was to disable the custom VisitedStarsCache that allowed you to see what was discovered as far as EDSM was concerned. The original intent of the file was just to show you what you had actually visited, and that should still work, with a copy of the file created by the game itself. That is, starting one fresh, or if you have one that you never replaced. However, now the game checks for some of the things that will be different with a downloaded one, and they either delete it, or cut the list short based on how many places you've actually been.
The ImportStars.txt method of repopulating it is supposed to still work. I got an answer to my support ticket about that, and the support dude talked to some of the individual developers who worked on it, and confirmed that it wasn't deliberately disabled. However, myself and several others haven't been able to get anything to import that way, so I think there's an unintentional bug preventing that method from working.
So right now the only legit way to get a working VSC file if you don't have one, is to let the game start a new one, and it'll only have your travel history from that point forward. Or if you're a good enough programmer, you can repopulate it yourself, which is the route I took to get mine back to where it would have been with my travel history had I never lost mine and had been using it continuously.
