If a new site has recently been added to the system and invoices don't appear to be exporting when setting is ticked for All Sites, you can check to ensure it's included by following the below steps.
Click on Organisation Administration tab
Click on Purchaser Group tab
Click Edit and then untick Allow Attachment to Any Unit tick box option
Click Update button
Edit back into the purchaser group
Tick the box for the new site
Click on Update button to save changes
Click back to tick the setting for Allow Attachment to Any Unit
New measures are being but in place to ensure these are automatically picked up when the above setting is enabled. If you need further assistance, please feel free to contact us by using our Digital Assistant.