Data not saving to database

[Saturn57]

I have a form that is composed of data from two linked tables. When I hit the save button the info that is on one table dissapears. Can anyone steer me in the direction to start looking. Here is my save statement:

private void quoteCalcHeaderBindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
//calculateBN_Click(null, null);
this.Validate();
this.quoteCalcHeaderBindingSource.EndEdit();
this.quoteCalcHeaderTableAdapter.Update(this.estimatorDataSet.QuoteCalcHeader);
this.Validate();
this.quoteCalcBodyBindingSource.EndEdit();
this.quoteCalcBodyTableAdapter.Update(this.estimatorDataSet.QuoteCalcBody);

}