Export multi line invoices into CSV

We have invoices with multiple line items/SKUs but when export data it only provides one sumamry line. How can we export all line items into CSV?

Hello @CCNGlobal

The can be done from the backup file as it contains sales invoice item data.

https://support.quickfile.co.uk/t/create-a-data-backup-schedule/8867

how do i access the backup files?

The link to the support article is in my last post.