Hi rockstarbookschi!

I'm here to help you and explain how the payment link in QuickBooks Online works.

If you'll send an e-invoice (electronic invoice) and your QuickBooks Payments is connected, the email will include a button where they can process the payment. When you make any changes to the invoice, it'll sync automatically and they'll be able to see it when they clicked the button. Currently, we're unable to stop the syncing to ensure the payment they made will be reflected in the right transaction in QuickBooks Online.

We've compiled the common articles about QuickBooks Payments. These will discuss more on how this service can help your business. Check them here: QuickBooks Payments FAQ.

Keep on posting here and we'll assist you. Have a great day!