QuickBooks Online releases a new invoice experience to help you manage your invoices efficiently. However, some features have been made unavailable while new features were added.
I recognize that having the subtotal option on your invoices is essential. Hence, I recommend sending feedback directly to our product development team. They will gather all your suggestions and consider them while working on future software updates to ensure they meet your business needs.
Don't hesitate to add a comment if you have additional questions about managing your invoices or other related concerns in QuickBooks Online. We can always lend a hand.