Multiple reports not matching

We have a production and a DR SEP12 server.  Each has it's own database and the databases are replicated.  When we configure reports, we get two different reports, one from production and one from DR.  The reports never match exactly and one report may have clients that the other report doesn't have.  Why is that?  Is there a way that we can get one single report with ALL of the accurate information?  We are using this reports for regulatory compliance and we need consistent, accurate reports.  Thanks.