Summary: 

If you have any transaction that has not been exported over to Xero, you can manually export it.

Steps:

1. Navigate to Integrations
2. Click Integration Store
3. Select Xero 
4. Click on Export Data tab
5. Select the transaction you want to review
   • Invoices, Journals, Customer and etc.
6. Add the necessary filters and dates
7. Search transaction number 
8. Under the Export field, click Export

Additional Information:

You have the View Failed Exports Transaction however they are only for transactions that have failed and this is an overview of all exportable data that goes to Xero: