I have $5$ or so duplicate/closed questions, which is hurting my "positive question record" statistic. So, I edited a useless duplicate question and asked a new question, which I was told "if you want to ask a different question, don't edit a duplicate."
I am wondering why this is the case, as editing a new question in place of an old dup would be beneficial to the cite. It would remove a useless duplicate and add a new useful question. Why isn't this allowed?