Hi Cindy,
Thanks for the additional info. To confirm, your id_Project field is *not* on your Source No layout? This would likely be mapped on the final tab labeled "Gantt". If it is not mapped on any tabs on the layout, then DayBack should not have any access to edit it.
If it is mapped on the layout, but it is *not* mapped to sc_projectID in the DBk_WebViewerSource field in your Event table, then the field would definitely be overwritten by an incorrect or empty value. Let me know if that helps! If not, I'd be happy to take a closer look at a copy of your files; just email us directly at
[email protected] and we'll make a plan.
Thanks again,