Thanks for getting back to us and for clarifying the product you're using, alcohol123.

Let me share some additional about receiving payments on the invoices per location in QuickBooks Online.

What you've figured out is correct that QuickBooks recognize to generate transactions created per customer. When applying for payments, the system only shows transactions associated with a particular customer (parent customer). We still have to select the parent customer or their name to show all the open invoices even we've created invoices per location. 

I can see how relevant and important this option for your business to easily deal with this situation. For now, I would suggest checking our blog website so you'll be updated with the latest features and review if showing the open invoices per location will be included in the next product release.

Please don't hesitate to post again if you have other concerns about QuickBooks Online. I hope you're having a great day. Take care and stay safe.