Re: du -sh @ orig ac
It's reasonable to assume that the RBS systems have are able to handle exceptions at a transaction level, i.e. reject records that contain bad data, rather than the entire file. If they didn't, problems like the recent one would happen at least once a week.
If a system that can handle bad records rejects a whole file, the likelihood is that the third party that supplies the file has modified the format, either deliberately or accidentally.