The 512 xms sounds from the xms-64 usb stick are stored next to the PA-800 sounds(factory and user)

But where are the 361 multisamples, 689 drum samples, 348 drumkit and over 400 styles stored.
Is all the data stored inside the PA-800 or is the PA-800 reading all the data from the usb stick .
In other words , how those the xms-64 usb stick effect the empty user and favorite places and sample memory inside the PA-800.
Please help me, thank you
regards Willem H