The reason you see those receipts in the Xero app in the "Receipts" section is because they were uploaded through Veryfi as "Expense Claims" instead of "Bills".
You can change all your receipts to be "Purchases":
In the Veryfi mobile app:
Navigate to receipt Details
Tap on Xero Receipt Settings
Change to "Upload to Purchases"
Tap on “Save”
In the web portal (app.veryfi.com)
Navigate to My Documents
Click on "View Details" for receipt
In the popup, click on the "Xero Settings" tab
Change to "Upload to Purchases"
Click on “Save”
You can also find more details about Xero integration here: https://www.veryfi.com/xero