Jeff,

Hmmm...I'm not sure what's going on here. This should work just fine. Try adding the following code to the MM .NET sample application's AAppTest and see if it works for you:

public bool TestMultipleSaves(int orderID)
{
	string Exception;

	Orders oOrder = new Orders();
	oOrder.GetOrderByOrderID(orderID);
	oOrder.Entity.Freight = 1.23M;
	if (oOrder.SaveDataSet() != mmSaveDataResult.RulesPassed)
	{
		Exception = oOrder.Exception.Message;
		return false;
	}

	oOrder.Entity.Freight = 2.34M;
	if (oOrder.SaveDataSet() != mmSaveDataResult.RulesPassed)
	{
		Exception = oOrder.Exception.Message;
		return false;
	}

	return true;
}

What is the actual exception that you're getting? You can look at the business object's Exception property to determine this.

Best Regards,