This isn't the kind of service I want you to experience, -AventadoR.

Let me make it up to you and ensure you're able to use the desired number you need on your sales forms.

Yes, you can use 'CN' on the credit notes, the system will automatically follow the numbering on your next entry. See the attached screenshot below for your visual guide.

I'm adding this article in case you want to personalize your sales forms: Use and customize form templates.

Let me know if you need additional information by commenting below. I'll be around if there's anything else I can do with the number sequence in QuickBooks.