First, is it possible to even file a corrected or amended return if absolutely no numbers have changed? I do not know the answer to this, I am just asking. The second thing to consider, which is just my opinion, is that a corrected or amended return may be apparently manually reviewed, which therefore may apparently increase the chance of the client being audited, especially since you stated there are two Schedule C forms on the return. This is just my opinion, I may be wrong, and you do what you want to do.