Please add the ability to edit invoice dates. As an example, if an office calls and says something was billed incorrectly, or something was missed on the original invoice, and a correction needs to be made- being able to re-invoice it at the original date for accounting and record keeping purposes is crucial. Especially if the change is being made in the following month, there is no way to correct it and reflect in the month the work was done. It would now have to be billed in the current month, and that delays payment and complicates accounting records. In addition, we often can't invoice a handful of cases on the last day of the month, as they might not be fully completed yet- even though they are scheduled for finishing on the last day of the month. We do a lot of complex, full mouth and cosmetic cases, and invoicing before the case is fully complete is problematic, as not all items are always in the case pan, or accounted for, if work is still being completed by the technician. Having the ability to invoice the case when finished, if it rolls into the first or second day of the next month, and date it back to the last day of the month so that it shows on the statement, and we can collect on it, would be ideal.