No, it doesn't happen often. It's quite rare.
Generally speaking, the files reveal trends. Consequently, parole officers are able to work with the offenders and try to anticipate what will happen for them based on emerging trends. Is the inmate racking up offence reports and institutional incidents? Is she following his programs? Does he have an everyday job? By answering yes or no to these questions, officers can approximately anticipate what the inmate's next security level will be.