Hi Sean,
Thank you for your interest in Syncfusion products.
We are able to reproduce this issue and this is known issue in Grid. This issue raised because of association
relatin between those datatables. We have recently fixed this issue and will be available with our Syncfusion
Essential Studio 2009 Volume 4.
Our Volume 4 RC,which has been released yesterday has a fix for this issue.
Could you please try this version?
We have published the Essential Studio version 2009 Volume 4 RC in the following forum :
http://www.syncfusion.com/support/forums/general/91019/essential-studio-2009-vol4-rc-v74015-available-for-download
Please refer the sample from the below link.
http://files.syncfusion.com/support/grid_mvc/Incidents/F90993/MVC_GridSample.zipPlease let me know if you have any concerns.
Regards,
M. Ba