Hi James,
Thanks for using Syncfusion products.
I am afraid that I am not able to reproduce the issue, which is mentioned here. There is no certain limitation for grouping the fields. We can have grouping any number of fields. Please refer the following steps that I tried to reproduce the issue:
1. Created a sample with GridGroupingControl, binded with NWIND database.
2. Have context menu, which moves a row to another grid.
3. Tried Grouping fields ( more than 5).
4. Rearrange the columns.
5. Moved a row to another grid using context menu, but it doesn’t throw any exception.
Please refer the video clip from the below link, which illustrates this:
http://www.syncfusion.com/support/user/uploads/group2020704673.zipPlease refer the sample from the below link, which I used to test this issue:
http://websamples.syncfusion.com/samples/Grid.Web/6.4.0.15/Grid_Web_GroupingLevel/main.htmPlease have a look at the above and try like this, if still the issue exists, could you please reproduce it with the above sample, and send back to us? So that we could find out the real cause of the issue, and provide you a better solution .
Regards,
Raji