HI everyone. I am having some issues with the 'due on' feature since the last upgrade.  I have most accounts set on 30 days from date of invoice. The accounts are reviewed and a number have come back with amended terms of - for example - 60 days from invoice.  This is for all unpaid invoices currently on account and all new moving forward.  How can I go and amend the 'due on' dates of invoices already on the systems as the clients wants updated statements showing all invoices in newly agreed 'correct' periods on statements.