Both the receipts and memos associated with your Brex transactions will export to NetSuite. Here is how it works:

Step 1: If you haven't already, set up the NetSuite integration (instructions here)

Step 2: Ensure that your Brex transactions have receipts and memos associated with them prior to exporting; you can see which ones are missing by using the top filter bar on the Company Transactions tab

Step 3: When you are ready to export, read How do I export a transaction to a Journal Entry in NetSuite?