I am hopping in this thread to assist you, @Joe217.
My colleague, LieraMarie_A, is correct about contacting HubSpot support regarding QuickBooks Online (QBO) integration. That way, they can walk you through how it should be appropriately connected and map to QBO.
Also, they can give you information regarding the workflow of the transactions.
Let me know if you have further QuickBooks-related concerns. I’ll make sure to get back As soon as I can. Have a good one!
