Hello again, @Q-B Online User 1. I appreciate your prompt response. 

Rustler is correct. You'll need to wait for the delivery. Then, enter the bill or if the payment has already made. Since right now, QuickBooks Online has no Sales Order feature which is present in QuickBooks Desktop. For the meantime, you can continue the workaround that you've practised for the scenario that you have.

I understand how the workflow you're looking for is beneficial to your business. To ensure your voice is heard, I can pass a feedback about this. For the time being, you can visit our blog and sign up to our Newsletter. This way, you’ll receive email updates about changes in the product. Our developers get inspiration from customers, so your voice makes a huge impact.

Additionally, I want to ensure that you get the most out of QuickBooks for your business. You can check some video tutorials that are designed to help you get acclimated with the software. They can be accessed at the following link: QuickBooks Tutorials.

As always, you can get back to me if you have any additional questions. I'm here for you. Have a great day!