disappearing DataGrid row

Question

Hello all, I have a DataGrid bound to a filtered DataView on a DataTable. When a new row is added through the DataGrid the new row dissapears as soon as focus is moved off of the new row. I have searched this forum and google and found similar threads that lead me to believe it has to due with rowstate for this new row but I can't quite sort it out. Anyone know what is happening? Thank you, jmatt