Changing filter does not clear selected entries in custom Processing Form

Hi, all. I’m currently working on custom processing form which uses a filter. However whenever I select entries and change the filter, the entries I selected remain selected. Is there an event handler needed to clear the selected fields or should it automatically clear all selected fields when the filter is updated?

Here are some screenshots and initialization of the view.

public SelectFrom<ARPayment>.
            Where<ARPayment.docType.IsEqual<ARDocType.payment>
                    .And<ARPayment.status.IsEqual<ARDocStatus.balanced>.Or<ARPayment.status.IsEqual<ARDocStatus.closed>>.Or<ARPayment.status.IsEqual<ARDocStatus.open>>>
                    .And<ARPayment.status.IsLessEqual<GiroCheckToProcessFilter.action.FromCurrent>>
                    .And<ARPayment.voided.IsNotEqual<True>>
                    .And<ARPayment.paymentMethodID.IsEqual<PaymentMethodConstant.check>.Or<ARPayment.paymentMethodID.IsEqual<PaymentMethodConstant.giro>>>
                    .And<ARPayment.paymentMethodID.IsEqual<GiroCheckToProcessFilter.paymentMethod.FromCurrent>.Or<GiroCheckToProcessFilter.paymentMethod.FromCurrent.IsNull>>
                    .And<ARPayment.customerID.IsEqual<GiroCheckToProcessFilter.customerID.FromCurrent>.Or<GiroCheckToProcessFilter.customerID.FromCurrent.IsNull>>
                    .And<ARPayment.docDate.IsGreaterEqual<GiroCheckToProcessFilter.startDate.FromCurrent>.Or<GiroCheckToProcessFilter.startDate.FromCurrent.IsNull>>
                .And<ARPayment.docDate.IsLessEqual<GiroCheckToProcessFilter.endDate.FromCurrent>.Or<GiroCheckToProcessFilter.endDate.FromCurrent.IsNull>>
                >.
           OrderBy<ARPayment.docDate.Desc,
               ARPayment.refNbr.Desc>.
           ProcessingView.
           FilteredBy<GiroCheckToProcessFilter> GiroChecksList;

This is problematic because pressing process will process unwanted selected entries. So, any insight on this and suggestions will be invaluable. TIA!