After exporting a report, if I make changes to it in Zoho Expense, will those changes get automatically updated in Xero?

You will have to export the expense report again by clicking the Export to Xero button on the report to update the changes in Xero. To do this:

1. Go to Reports.
2. Click the report you want to export.
3. Click the Export to Xero button on the top of the report.