Thank you for providing additional information, Ram. Allow me to chime in on this thread and share some information about how Melio works in QuickBooks Online (QBO).

If you connect Melio to QBO all payments, invoices, and vendors’ details will be automatically synced between the two. Since QBO is only the receiver of data from Melio, I recommend reaching out to their support to get further details on how they transfer info.

Additionally, you can refer to this article on managing your vendors: How to view and edit vendor transactions in QuickBooks Online.

Let me know if you have other questions about Melio's integrations to QBO. I'll be here to provide you with the details you need. Have a great day!