Our invoice numbers have jumped from 4036 to 4041, can you change the new generated invoice number back to one of the missing numbers?

Thank you for posting here in the Community space, @haylsdgm. I understand that this isn't a usual situation when creating an invoice in QBO. The invoice numbers should be in the correct sequence based on the last one created. Let me help you fix this.

At the moment, there's no existing investigation about invoice numbers jumping into incorrect sequence. And to answer your question, yes we can change the newly generated invoice number back to the correct order. 

Here's how: 

1. Go to Sales, and choose Invoices.
2. Look for the newly generated invoice transaction below. Then, click the Edit icon below the Action column in line with the invoice.
3. Change the Invoice no. to the correct order. Then, tap Save and close.

If the issue persists even after changing the invoice number, we recommend performing some basic troubleshooting steps to identify if this is a browser-related concern.

Let's start by opening your QBO account via incognito mode to avoid storing cache data. Accumulated data from your regular browser may cause odd behaviors while navigating QBO. We can use the shortcut keys below as shortcuts:

• Google Chrome: press Ctrl + Shift + N
• Mozilla Firefox: press Ctrl + Shift + P
• Microsoft Edge: press Ctrl + Shift + N
• Safari: press Command + Shift + N

If this works, clear the cache of your regular browser to remove accumulated data. If the issue persists, you can use another supported browser or device. It might be that the current one you're using has a temporary issue with the program. 

Additionally, you can utilize these articles to help you manage your Invoice transactions:

• Customise invoices, estimates, and sales receipts in QuickBooks Online.
• Create recurring transactions in QuickBooks Online.
• Void or delete transactions in QuickBooks Online.

The Community is 24/7 available. If you have additional questions, don't hesitate to reply to this thread. We'll be happy to lend a hand. Take care.