<question>
In cases where the total casualties reported on the annual report (FRA F 6180.56) differ significantly from the monthly reports (FRA F 6180.55a), what specific steps should a railroad's safety team take to investigate and address this discrepancy, and what potential implications could this have for their safety record and operational efficiency?
</question>

Was this question written by a human domain expert? Answer only "Yes" or "No".