SelectManyListbox select ALL when duplicates are present

Question

I am trying to use the ADF Faces selectManyListbox component to select ALL upon page load. I have set the value of my selectManyListbox to a List, and this works for most of my selectManyListbox components.
However, when I use this solution on a different selectManyListbox that has a duplicate attrname (id) but different display name (I know the data is bad), the duplicate is not selected. I want the "ALL" checkbox selected though, and it will not be selected upon page load unless all are selected in the list.
When I print out the List "selectedPS" in the log, I can see both of the duplicate values in the list, but only this first is selected in the selectManyListbox.
Is there anyway to get around this? Or is this the entended functionality ? I am using JDev 11.1.1.3
in my fragment ...
selectManyListbox value="#{backingBeanScope.backing_Fragments_SearchForm.selectedPS}"
in the backing bean...
public List getSelectedPS(){
if(selectedPS == null){
selectedPS =
selectItemsForIterator("AllShopsView1Iterator","ShopId");
return selectedPS;
public void setSelectedPS(List selectedValues){
this.selectedPS = selectedValues;
public static List selectItemsForIterator(String iteratorName,String valueAttrName) { 
BindingContext bc = BindingContext.getCurrent();
DCBindingContainer binding =
(DCBindingContainer)bc.getCurrentBindingsEntry();
DCIteratorBinding iter = binding.findIteratorBinding(iteratorName);
List selectItems = new ArrayList();
for (Row r: iter.getAllRowsInRange()){
selectItems.add(r.getAttribute(valueAttrName));
return selectItems;
Thanks,
Jessica

Answer 1

It depends upon the kind of duplicte.  You have duplicates where two copies of a file are generated and added.  You can have duplicates where both entries point to the same file.  If you have the latter and delete the file the second entry will end up with a broken link.
Get info on the tracks and see if they point to exactly the same file in the exact same location.