Key Blanks after Entry

I have created a DAC with two keys and an Identity field. I can view and edit existing records fine, however when I create a new record and enter in a new key value as soon as I leave the field it blanks. Both Key fields blank after I focus is lost.

Any Ideal? 

   [Serializable]
    [PXCacheName("MLS Listing")]
    [PXPrimaryGraph(typeof(MLSListingList))]
    public class GPMLSListing : PXBqlTable, IBqlTable
    {

        public class PK : PrimaryKeyOf<GPMLSListing>.By<address1, postalCode>
        {
            public static GPMLSListing Find(PXGraph graph, string address1, string postalCode) => FindBy(graph, address1, postalCode);
        }


        #region ListingID
        [PXDBIdentity( FieldName = "Property ID")]
        //[PXSelector(typeof(Search<address1>), ValidateValue = false)]
        public virtual int? ListingID { get; set; }
        public abstract class listingID : PX.Data.BQL.BqlInt.Field<listingID> { }
        #endregion

        #region Selected
        [PXBool]
        [PXUIField(DisplayName = "Selected")]
        public virtual bool? Selected { get; set; }
        public abstract class selected : BqlType<IBqlBool, bool>.Field<selected> { }

        #endregion

        #region Address1
        [PXDBString(50, IsKey = true, IsUnicode = true, InputMask = "")]
        [PXDefault]
        [PXUIField(DisplayName = "Address")]
        //[PXCheckUnique(Where = typeof(Where<address1, Equal<Current<address1>>, And<postalCode, Equal<Current<postalCode>>>>))]
        //[PXSelector(typeof(Search<address1>), ValidateValue = false)]
        public virtual string Address1 { get; set; }
        public abstract class address1 : PX.Data.BQL.BqlString.Field<address1> { }
        #endregion

        #region PostalCode
        [PXDBString(20, IsKey = true)]
        [PXUIField(DisplayName = "Zip")]
        [PXZipValidation(typeof(Country.zipCodeRegexp), typeof(Country.zipCodeMask), typeof(country))]
        //[PXSelector(typeof(Search<postalCode>), ValidateValue = false)]
        [PXPersonalDataField]
        public virtual string PostalCode { get; set; }
        public abstract class postalCode : PX.Data.BQL.BqlString.Field<postalCode> { }
        #endregion

        #region City
        [PXDBString(50, IsUnicode = true)]
        [PXDefault]
        [PXUIField(DisplayName = "City", Visibility = PXUIVisibility.SelectorVisible)]
        public virtual string City { get; set; }
        public abstract class city : PX.Data.BQL.BqlString.Field<city> { }
        #endregion

        #region State
        [PXDBString(50, IsUnicode = true)]
        [PXUIField(DisplayName = "State")]
        [State(typeof(country))]
        public virtual string State { get; set; }
        public abstract class state : PX.Data.BQL.BqlString.Field<state> { }
        #endregion
}