Hi Gkrish,
Thank you for being patience.
Please update us more details on your issue. Are you handling any events? Which version of the grid are you using? The following is the sample which demonstrates the deletion of records in the GridGroupingControl without any issues. Kindly modify the sample to reproduce the issue here or post us your grid property settings, this would help to debug your issue at the earliest.
Sample :
DeletionOfRecords_31Jan06.zipHave a nice day.
Best regards,
Madhan