Invoice Template numbering series

[SmartBarf]

I am wanting to change an existing template to have a new numbering system. It is only the prefix I want to change. How do I go about this? I have tried to edit the template but the area where you enter a number is greyed out so I guess I am looking in the wrong place.

Can anyone point me in the right direction?

[localdrop]

Did you ever figure out how to do this? I need help on this as well

[SmartBarf]

I'm embarrassed at how easy it was. Just edit your next invoice and future invoices follow the new style eg I changed SB2019-3647 to SB2020-3647 and the invoice that followed it was automatically numbered SB2020-3648