Leave unprocessed on Error?

we have some scripts to turn off our dev Redshift server at night/weekends, but the files that we are importing come in at all hours, so occasionally we will get a file that comes in and doesn't get imported/ has an error. But its added to the processed list, so if it comes in again during working hours, that file doesn't get imported because its on the already processed list. Is there some option that could be added that would not mark it as processed if there was an error importing? (or better, somehow set up a delay to try again... )