I'm not sure how helpful this reply is but I found this in the BIX 7.1 User Guide for '-f' '
Force the extract to stop at the first error that it encounters. This option only works with a batch size greater than 1. See BIX logging and error handling for information on conditions where encountering an error does not force the extract to stop.
Note: This option is not available when running an Extract rule in the Pega Cloud.
Does this help your case or did you already know this?