I've got some instructions for you on hoe you can generate a new set of invoice number for invoices with a specific product list.
You can utilize new invoice number in QuickBooks Online by enabling the Custom transaction numbers feature. This option will let you enter any number or letter format on the invoice.
To do that:
Click on the Gear icon.
Select on Account and Settings.
Select Sales, then press on anywhere within the Sales form content section.
Check the box next to Custom transaction numbers.
Hit on Save and then Done.
After that, you may open an invoice or any sales form. In the Invoice no. field, key in the custom number or letter combination you want to use for your forms. The sequence you set here applies to all sales forms and will increment on the succeeding transactions.