I just migrated from Sage 50 Accountant Canadian Edition and I cannot revise my invoice #'s. I use different codes on the end of my invoice #'s for different things. Example - Refunds, Reversals this way I don't have to click invoices I know that what it was for. I also use another eternal program that has auto invoicing and I import the transactions and the number sequencing is different then what I use in Sage.