I'm glad you raised your concern here, @acctggst.
I can see how useful this feature was on your end. I'll share info about the updated invoice layout and how to remain on the customer page when receiving payments.
With the updated invoice format, receiving payment there, and clicking the Save and Close tab will automatically go to the dashboard.
However, if you process the payment in the customer profile, let's automatically click the Receive payment tab below the Action column.
Never edit the invoice and receive the payment there because it will route back to the dashboard.
Moreover, to receive payment continually, select the Save and New tab to remain on the Recieve payment page.
You might want to personalize your sales forms. Check out this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.
Let me know if you have additional questions about managing your invoice or receiving payments. I'll always be around here. Keep safe.