Previously on the older Accountright Standard V19 we were able to retain the quotatation number as the invoice number.
Keeping the same reference number is particularly handy in our circumstance where we take a deposit for jobs then invoice the outstanding balance once completed.
It appears this is not an option on MYOB Essentials.
The only work around I have found is to manually check what the next invoice number would be, enter it as quote number then try remember to skip that invoice number when generating the next invoice for another client .... very annoyingly time consuming.
"Retain original quote number as invoice number"