The enhancement that was added was to provide "support" for Portal Level lists in the API.  This was at the request of Module Developers like Rodney and was also needed to support profile properties of type List.

When the enhancement was added it was decided (at least for the case of Profile properties) that managing the list would be implemented in the profile property editor - rather than providing a central list management UI for portal lists.  In doing this a new ListEntries "subcontrol" was created which is used by both the Host List Editor AND the Profile Property Editor.

This subcontrol is available for module developers who wish to add list management to their modules.

Adding a portal level List UI capability is not scheduled for inclusion in the next release.

Ok, I'm trying to work out if I can run some SQL scripts to maintain lists at portal level. On my events module, for example, I have Event Category. Currently all the list entries are set to PortalID = -1.
I ran a script to change half of these to Portal 0 (my dev portal).  I then expected the ListController to get only the items for that portal.   
I use this code:
                    listDataSource = listController.GetListEntryInfoCollection("SmartThinker_EventCategory");

to get the items for this list. It gets all the items by that name, regardless of portal. I then had a look at the core stored procs, and GetList is the one that uses PortalID, but this returns the top level list info. The only stored proc (4.5.1) that I can see that returns list items is GetListEntries, which doesn't take in the PortalID, so it will ignore this.

So my question is, how should one retrieve list entries for a list for that portal only. I don't want to use code to filter the list on PortalID, I want to use the core methods that only return the list entries for that portal. Does this exist?
I expected an overload which looked something like this:
                    listDataSource = listController.GetListEntryInfoCollection(ListName, PortalID);

Am I approaching the solution incorrectly? When you make a duplicate list for a different portal, does it share the same name and just have the PortalID different,

eg.

ListA Portal 0
ListA Portal 1

or does it have to have a different name:

ListA Portal 0
ListB Portal 1

I would not expect it to work like this as it almost makes PortalID redundant.

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