teo22

It doesn't. At least not always. I checked before I made my post. Then I watched someone else play that part on youtube (from 2 years ago, so likely the latest patch) in case me loading the save file negated the pop-up . He didn't get any warning pop-up either. Now after your post, I looked up four (4) more Let's plays. Not a single pop-up. I've seen people online mention a warning pop-up, but I haven't actually seen one. Nor a screenshot of one.

Integrated does not mean what you seem to think it means. integrated adjective with various parts or aspects linked or coordinated. integrate verb (of a thing) combine with another to form a whole. Integrated just means it's a part of the main campaign. It doesn't imply anything about not being able to complete it after a certain point in the main campaign. You don't start the expansion separately from the main menu—It's integrated into the campaign. And if you, like me, bought the expansion with the base game, you'd have no way of knowing that the game doesn't let you return after the final mission. Not even if you read the store description, which I never do because they tend to spoil 90% of the game I'm about to play anyway. Yes, it's safe to assume that jumping into a pit means you have to finish that quest line before returning. That could be considered common sense. But nothing in the game hints or warns that you can't return even after the quest has been finished.

So is this stuff that's already in the game? I chose GoG anyway, and don't regret it, but I'd like to know if I should bother copypasting once they get it working. I if just unlocks stuff early I'd rather not have them at all.