Unable to clear values programmatically when using virtualization

sorry i missed to mentioned the below

the selected values are getting duplicated when we delete it.

steps.

1. Select the options,

2. save the selected options

3. Load the selected options and set the selected options using below statements

  var operatorDropDown = $("#Operator").data("kendoMultiSelect");
        operatorDropDown.dataSource.filter({});
        operatorDropDown.value(currentQuery.operators);

4. The values are getting selected

5. Delete the selected options by clicking 'X' Button

now see the duplicate options where their index is out of initial load.

Regards,

A.Jayamurugan