Custom report generated in Backup Exec 2012 using fields from 'Job History Group' shows data only from Backup Exec 2012 and does not report the data from previous version before the upgarde.
Upgrade from Backup Exec 2010 to Backup Exec 2012. Run few jobs and then create a custom report selecting 'Job Name' and 'Status' filed under 'Job History Group' category. Run the report, it will only have information about backups that ran after upgarde.
A hotfix is now available for this issue in the current version(s) of the product(s) mentioned in this article. Refer to the Hotfix link under Related Documents at the end of this article to obtain the hotfix needed to resolve the issue.
Backup Exec 2012 Rev 1798 Service Pack 2 (TECH203155)