Why do reviewers need to be selected again for a revised paper? I submitted a paper to a marketing journal and the reviewers recommended a major revision and a minor revision. I had to shorten the text and get professional help for proofreading. I addressed the every single comment of reviewers.

Now, it is in the “Awaiting Reviewers Selection” mode once again. Does anybody explain why the journal editor needs to select new reviewers at this step of review process?
I think that two explanations are possible:


(At least on of) the reviewers did not agree to review the paper again. This can happen, as a reviewer you are not obligated to review a revision.
The status on the webpage does not reflect the actual status the paper is in. E.g., the actual status might be 'paper lying on the editor's desk, collecting dust'.