Backing up a report


I've created a report which gathers invoice information and has an attached copy of the invoice from a number of different sheet.

I need to export this information to give to a bank as part of a construction draw process. If it was a sheet then I could use the backup function to create a spreadsheet and export a copy of all the invoices but I don't see how to create a backup of a report or how to turn the report into a sheet that could then be backup'ed.

Thanks, Mark