I have the same problem.  I want the invoice, which already had work done on it...charged as a loss not just a transaction to clear the balance but actually charged to a loss.  why isn't there just an option to charge off the balance on an invoice instead of either having to just delete the thing and not take the loss in the instance that it's a small re-negotiated amount.  We are professionals, no inventory and are running the enterprise professional just so we can get a correct accrual report and that is screwed up all the time by "paid" but not actually recorded...what does that mean?????  UGH