needs some changes

The invoice number should have an option to change or correct. I have serious problems with this because I keep a copy of names of customers and track them through invoice numbers. Sometimes I make mistakes, double the entry, so I trash it. The numbering system does not allow me to change, go back, or update. So, I have missing spots on my list.

Grrtnws about Moon Invoice - Invoices, estimates, purchase orders, timesheet, v2.4