I reported this as a problem two years ago and it was fixed. It is happening again.
1. click on Purchase Orders on the left of the window
2. filter for Status: Confirmed by Supplier, Exported: No
3. Select Submit
4. The PO's I want show up on the screen
5. Select Download
6. All PO's in the system appear on the screen for download.
Please let me know if you can fix this quickly.
We'd updated the filtering systems and the download pages hadn't been updated to use the new settings yet. They're all updated now.