Thanks for dropping by the QuickBooks Community, jccelec.
I want to ensure you're able to use the correct number when creating an invoice.
When creating a transaction, QuickBooks takes the last number recorded and automatically increments this number by one for each new invoice.
Since you’ll be using a different number sequence, you’ll have to first manually update the invoice counter. Let me provide you the step by step process.
The next time you create an invoice, QuickBooks will assign the correct number. Before creating a new one, make sure to first delete the dummy invoice to keep your records in order.
Feel free to check out this link, to learn more on what’s new in QuickBooks Desktop for Mac 2019.
Should you have any questions working in QuickBooks, leave me a comment. I’ll be happy to lend a helping hand