Only approved expenses can be exported and there are two ways to do so.
Manual export - Go to the Approved tab, and click on the Export button. You’ill be able to download a CSV file containing the transactions and attachments that you have selected for a particular month. All timestamps are in UTC.
Xero integration - If you have Xero integration set up, the expenses that are 'Approved' will be synchronised to Xero periodically. If you’d like to check the last sync date and time, navigate to the 'Settings' tab.