This idea has been merged into another idea. To comment or vote on this idea, please visit S1-I-1759 Ability to amend Invoices without unallocating payments.
We are a travel agency, and client invoices change frequently.... elements are constantly being added to existing bookings , like car hire, insurance, hotels etc, and at the moment we have to un-allocate payments made, add an element to the invoice and then re-allocate payments back on .... very laborious ...