We frequently for VAT purposes (customers on a self-billing agreement for example) have to change the Invoice date once a customer has paid. This has a severe impact on our P&L reports and we can never rely on their accuracy.

I think it would be very helpful and now with the VAT Domestic Reverse Charge for the invoice to have an Issued Date and a VAT date. The Issued Date would be the date that goes into the P&L report and the VAT date would be the date for VAT purposes and a VAT run.