...
They are a standard zip file with a special Manifest.xlsx file and one or more Crystal Report files.
There should be no folders contained in the zip file.
Unlike other imports which can only create new records, Report Packs are capable of updating existing reports and report slots.
Manifest Details
A report manifest is an Excel file called Manifest.xlsx. The contents of which determine what report and report slot records are created in your Appliance.
Although the manifest file looks similar to other Excel imports, many of the conventions in other imports do not apply to the manifest (as it imports considerably simpler records).
Reports Sheet
Report Slots Sheet
Policy Settings Sheet
stuff