There is no general answer. In any given case, you don't know.
Just you would like for people to assume you have the best intentions and reasonable practices, you should also provide some respect to the developers of the original code and not assume what you see in production is necessarily their best work or the way they would do things now.
Just you would like for people to assume you have the best intentions and reasonable practices, you should also provide some respect to the developers of the original code and not assume what you see in production is necessarily their best work or the way they would do things now.