I do not like the new conversion from estimate to invoice. Can I turn this function of? Can I use use old version? It changes the quantities if you change the price.

Hi there, @williamhughescom.

I have replicated your concern in QuickBook Online. An Estimate doesn't affect your inventory count since these are non-posting transactions. Your inventory count is affected after your estimate is converted into an Invoice. Although, you can add another inventory item to avoid changing the quantity of the other item.

Here's how:

1. Go to the Sales menu and choose Products and Services.
2. Click the New button.
3. Choose Inventory in the Product/Service information section.
4. Enter the details in your Inventory and confirm it by clicking Save and close.

I added a some screenshots for your additional reference.

You can also track your inventory manually, kindly check out this article:Can I track inventory manually?

I can see this article can be handy to know more about the impacts of inventory tracking on balance sheet and profit & loss reports in QuickBooks Online.

Loop me in if you need anything else. I'll surely get back to you. Keep safe always.

Did you figure out how to revert the previous version? I HATE the new version.

Thanks for sharing your thoughts and feedback with us, @Morganiy.

I want you to know that I hear you, and I'll take note of your suggestion. For now, we're unable to revert to the previous version. Our developers are constantly improving products to meet our customers' needs like you.

In the meantime, I'd recommend you visiting our Blog to learn what new updates are being rolled out, as well as additional references while working with QuickBooks.

Also, you can follow the steps shared by my colleague in case you want to add another inventory item.

As always, you can visit our Income and Expenses articles in case you need some tips and related references for your future tasks.

If there's anything else that I can help you with, please let me know in the comment section down below. I'll be always around ready to help.