Can IDR be used to attach invoice images to existing payables invoices?

Is there a way to use IDR to attach pdfs of supplier invoices to existing Fusion payables invoices?

We have payables invoices which are passed from a 3rd party application into Fusion payables via FBDI. There are no POs for these invoices. We wish to add either the pdfs or link to them as attachments on the Fusion invoices.

Is there any way to process the pdfs via IDR to achieve this? I.e. for IDR to recognise that an existing invoice record exists in Fusion and attach the file to it.