i uploaded invoices around 350 in april 2016 but i deleted them as they all didnt go on but could not find the ones missing so all i want to do is delete the deleted files of sales so I can add the invoices back on .Can this be done?account number-6131407597
Invoices (as well as purchases and estimates/quotes) are never completely deleted, as they are kept to keep a clean audit trail to explain missing invoice numbers to HMRC, should the need ever arise.
You could just re-issue them with a new number, which is the easiest option, especially if you’re importing them. The alternative would be restore them and edit them as needed.
I hope that makes sense?