I have found changes in the file DotNetNuke.Services.Authentication.AuthenticationConfigBase.cs when I am upgrading an Authentication provider from DNN495 to DNN521

old AuthenticationConfigBase.cs (DNN495):

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using System;
using System.Collections;
using System.ComponentModel;

namespace DotNetNuke.Services.Authentication
{
    // Summary:
    //     The AuthenticationConfigBase class provides base configuration class for
    //     the Authentication providers
    public abstract class AuthenticationConfigBase
    {
        protected AuthenticationConfigBase(int portalID);

        protected int AuthenticationModuleID { get; }
        [Browsable(false)]
        public Hashtable ModuleSettings { get; }
        [Browsable(false)]
        public int PortalID { get; set; }
    }
}

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New AuthenticationConfigBase.cs (DNN521)

--------------------------------------------------------------

using System;
using System.ComponentModel;

namespace DotNetNuke.Services.Authentication
{
    [Serializable]
    public abstract class AuthenticationConfigBase
    {
        protected AuthenticationConfigBase(int portalID);

        [Browsable(false)]
        public int PortalID { get; set; }
    }
}

----------------------------------------------------------

Here is the code that doesn't work anymore:

            ModuleController controller = new ModuleController();

            controller.UpdateModuleSetting(config.AuthenticationModuleID, "AuthenID_Enabled", config.Enabled.ToString());
            controller.UpdateModuleSetting(config.AuthenticationModuleID, "AuthenID_MerchantName", config.MerchantName);
            controller.UpdateModuleSetting(config.AuthenticationModuleID, "AuthenID_MerchantPassword", config.MerchantPassword);
            controller.UpdateModuleSetting(config.AuthenticationModuleID, "AuthenID_IncludeHelp", config.IncludeHelp.ToString());
 

the thing is that this site DNN495 should later be upgraded to DNN521 and if this component is working differently?