I know you can export a list of all invoices that you have issued using Kashflow via Reports > General Reports > Activity Report.

But I'm asking my supplier to send me this list for my company ONLY as I wish to then import these details as my purchases. They are saying that they would have to delete all the other customer details apart from mine, which is an onerous task for them.

If it was possible to select a particular customer's (as well as an option to select all) invoices as a csv then this would resolve my issue... Is that something you can implement as an update?