Invoice Number - auto generation

Invoice Number - auto generation

Hello,

we're experiencing a problem with the autogeneration of the invoice number: even if we delete every invoice from the account and we set the auto generation invoice number at 0001, the new invoice retains a number that starts form the last invoice number even if ALL the previous invoices have been deleted from the account.
We're going to use a new Zoho invoice account starting on 01 january 2009, and we've made some test invoices in order to verify if we have customized the account properly.

But now  we have an empty account and we need to be sure that on 01 January will be issued the invoice number 0001, not number 0008...

How can we solve this issue?

Thank you for your support

Bitmovers srl