Your Acctivate Data will be included when you run an Acctivate Backup. See this post regarding creating a Backup. The other files you should consider backing up as well are any customized reports. These report files are NOT included in an Acctivate SQL Server-based Backup.
You can find these rpt Crystal Report files in the \\..\ProgramData\Alterity\ACCTivate\CustomReports on the Server computer hosting Acctivate.