This is surely happening because you are bound to a dataSource not fully implementing the IBindingList interface with the SupportsChangeNotification.
In that case, you have to rebind your second gridControl to the dataSource or, if possible, implement the IBindingList interface.
For more information on implementing the IBindingList interface, refer to our DataBindings sample and have a look at the ComposersBindingListComplete class.
Imported from legacy forums. Posted by PL (had 337 views)