There are times when re-issuing an invoice that you may ant to change the date of the invoice. The default s to issue an invoice as the current date. but you can override this and use any date you wish. This is very simple to do.
Just go to the relevant Order => Charges => Customer Charges and raise an invoice as usual (If you do’t know how to do that watch this video: How to raise an invoice in Flobot)
It is as simple as adjusting the dat highlighted below.