Importing Data into File Folder Objects in Agile 9.3.6

Is there a standard method within Agile (version 9.3.6) for importing data into File Folder objects?

We need to update a PageTwo MultiList field on a large number of File Folder records. We've explored several options, including the Agile Import utility, the FileLoad utility, and reviewed both the Admin and Import/Export manuals. However, it seems that importing into File Folder objects isn’t directly supported — or perhaps we’re overlooking something.

Before we go down the path of developing a PX or SDK script, we wanted to check here to see if something standard is available.

Thanks,
Drew