US/UK date formats on receipts

I can’t find anyone else mentioning this but we have just noticed that some of the receipts and invoices that that CO4 draws up show the date in UK format (day/month/year) next to the item invoiced, but the date at the top of the document is in US format (month/day/year). This makes the receipts and invoices very confusing and it seems the only way to change it is to individually export every receipt and change it manually before printing.

Please fix or tell me if there is a setting that needs changing.

Thanks.