Why after postback my summaryvalidator shows disabled requiredfield validator messages?

Question

I'm using javascript to make dynamic RequiredFieldValidators with some functions which work perfect disabling and enabling them with this function:

function myValidatorEnabler(validator, enable) {
                validator.enabled = enable;
                ValidatorUpdateDisplay(validator);
        }

I'm also using a asp:ValidationSummary which works perfect before postback, but after the button is pressed all validators which were disabled are shown in the Summary. Is there any possibility to avoid this?

I tried using ValidationSummaryOnSubmit() at the end on my javascript function but it didn't work. Just in case, I'm using UpdatePanel and ValidationGroup

This is my asp:ValidationSummary:

<asp:ValidationSummary ID="ValidationSummary1" runat="server" CssClass="Error" DisplayMode="List"  EnableClientScript="true" ValidationGroup="DatAca" />

and this is my Button

<asp:Button ID="btnEnd" runat="server"  Text="End" UseSubmitBehavior="false" ValidationGroup="DatAca" />

Thanks in advance.