If you install a new Framework version in a partition, and then introduce parts of the old shipped demonstration system, they probably will no longer function correctly.
In previous Framework upgrades the shipped demonstration definition XML files VF_SY001_System.XML and VF_SY001_Tables.XML files were not upgraded because some customers have used those demonstration files to define real application components.
The EPC141017 changes to the shipped demonstration material are so sweeping that these files are now being replaced in the upgrade. The upgrade saves the old files as VF_SY001_System _BeforeLastUpgrade.XML and VF_SY001_Tables _BeforeLastUpgrade.XML.