This is why we don't like (and shouldn't answer!) questions that have multiple separate questions in them.
The fundamental solution is to not answer them in the first place before they're fixed. After the fact, updating or deleting the answer is usually the solution. In the case where the question was changed inappropriately, we roll back the question edits.
In this case, I think the error was in editing out the wrong question in the first place. Now the question isn't the sort we handle, and the answers don't match it. I think the edit should have been to keep the "where is a good fractal world generator?" question, which is on topic and one we haven't fielded yetyet… but what's done is done and I'd rather see it left as it is than make a larger mess of it.