Thank you for creating this demo. I have followed the instructions exactly, but the list items in SharePoint are not being updated, they are being duplicated each time the form is submitted. I am relatively new to InfoPath, so if there were any other steps necessary to accomplish the id field being populated by SharePoint that were not mentioned in your demo, could you please provide them? When I created the id field, I specified it as an Integer. I have read through the thread above, and the one person solved their problem by "promoted the SPList fields in my SPLibrary", but unfortunately, I don't know what that means. I would appreciate any help you could provide. If there is any additional information I can provide or screenshots that would help troubleshoot my issue, please let me know and I'll post them right away. Thanks, Stuart