I have now pressed the big button, the vat summary totals looked the same so no problems there.
Also reprinted a couple of old invoices and they look ok, seems like the vat history remains intact.
Seeing as there is no reply from Georgesystems, I will have to manually change over 600 jobs, looks like i will be busy for a few days.
Then I will have to undo it all again next Christmas.
Wheres my calculator ?
Does anyone have a quick calculation to work out how to minus the 17.5% and then add 15%, is there a way to just knock off the 2.5% easily off the gross amount.