In our CRM 2011 ribbon we had written code to Refresh the Grid after click of a ribbon button.
It was like
crmGrid.Refresh(); or you might have implemented it like document.getElementById(“crmGrid”).Refresh();
After updating to UR 12 we were getting an error on crmGrid object.
“Object doesn’t support property or method ‘Refresh'”
After looking into DOM (for long-long time) we found that the Refresh method has been moved inside control class, so it can Now be implemented as