Delete canceled invoice

[JWitt]

I created a test invoice to send to myself so I could see what my clients see when they receive an invoice and go to pay.  I create a draft & cant see in the preview  the payment portal , so leave it and then go in to i delete it, (was still figuring this out but this is invoice #000003), I then go to create a test invoice again send it to myself(now this is #000004) looked at it, neat, all is good I go to cancel the invoice so it doesn't count anything. Now I have a test invoice that was meant to see something that I couldn't see when previewing and no way to delete it now. I'd really like to have my invoices cleaned up so when I look back into it there is absolutely no confusion and its not #000001, #000002, #000004. Is there any way I can fix this?

[RHatch]

Any time you create an invoice and save it as a draft it assigns an invoice number.  If you delete the draft it is removed from the system and you have no record of it.  That invoice number is then skipped.  If you send out an invoice and then need to remove it for some reason the only thing you can do is Cancel it.  This will then show up as canceled in your listing.  So if you are ever missing an invoice in the sequence it was a draft that was deleted.  

Now you can override the inovoice number so if you want to fill in the missing invoiced you can or if you want to start your invoice numbering to reflect something else.