Specify and invoice date when generating

Hi,

There needs to be a way to specify an invoice date.. 

So for example if the last day of the month is a Friday and the visits are then checked and reconciled Monday and Tuesday then you generate the invoices you want the invoice date still to be the last day of the previous month.. For accounting this keeps the sales and account aging in the month they happened rather than the next month.. You down't want "today" as the invoice date which could be the 4th or 5th of the month because it skews the accounting data with it all appearing in the next month..

Thanks,

Harley