I appreciate you sharing your query here with us, Mike29. Let me share insight when handling sales form numbers and the auto-recall feature to pre-fill transactions in your account.

In QuickBooks Online, the automatic recall option only pre-fills information like the vendor's name, products or items, and descriptions you've previously entered. That said, turning off this feature won't affect your Estimates and Invoice numbers in your file and will remain in order. You may want to check this guide for additional details: Use auto-recall to pre-fill transactions in QuickBooks Online.

In addition to that, you can manually modify transaction numbers on your bills and purchase orders if you wish to add or correct their details.

Moreover, I'm including this reference to help you track and receive customer-paid invoices: Record invoice payments in QuickBooks Online.

I'm always available in this thread if there's anything else you need further assistance with when managing sales entries in your account. Just keep me posted, and I'll be around to provide additional help. Stay safe and have a great day ahead!