Editing guidelines (for example this meta question) do not give any information about incorporating additional information from comments.
For example, while editing this, there is additional rather important information in comments:
I use textmate, e-texteditor and eclipse the most.
While making other changes (worth of editing), should I format that additional information from comments back to question, especially when person who asked the question wrote the comment?
In more complicated case (longer comment thread, or additional (important) information in comments of answers), is just copying information back to question worth of editing?
In my opinion questions are much better if you don't have to read comments to know important details. Same reasoning goes for my answers; usually I edit proposed improvements from comments to answer.