Another Beginner Easy Question

I'm trying to do something really basic.  I have a lookup table called TWageType and the structure is simply a description field containing 3 records (Hourly, Salary, Other).

I'm trying to create my first business object to simply allow me to retrieve all the records and bind them to a grid for admin maintenance.

So I have a WageType class inheriting from BusinessBase<WageType> and I have a WageTypes collection inheriting from BusinessBindingListBase<WageTypes,WageType>.  All works so far.

I have the following method in the WageTypes collection (list):

        public static async Task<WageTypes> GetAll()
        {
            return await DataPortal.FetchAsync<WageTypes>();
        }

and in the DataPortal_Fetch of the WageTypes collection (list) I have this...

        private void DataPortal_Fetch()
        {
           
            // get all the payment methods from the database.
            TWagePaymentMethods paymentMethods = TWagePaymentMethod.SelectAll();

           
            foreach (var item in paymentMethods)
            {
                WageTypes w = this.AddNew();
                w.Description = item.Description;

                //using (w.BypassPropertyChecks)
                //{
                //    DatabaseHelper.CopyProperties(item, m, string.Empty);
                //}

            }
        }

This appears to work but I have 3 questions. 

1)  The WageType object when created with .AddNew  has it's IsNew property set to true but in your example code in your eBook I didn't see any example of this unless I missed it.  IsNew should be false.  So what should I do?

2)  Why can't I do the BypassPropertyChecks like in your book.  If I uncomment this, the compiler complains that it isn't a property of the object.

3)  Is this even the correct way to do this?  My goal is simple,  load the values in a grid and let the user change them at will, add new ones, delete, etc.  Standard stuff.

Thanks again for any help.

Mark