In 2014.2 tool version, the way how a definition file needs to be applied is different
The command "apply_bd_automation" should be used, instead setting property PCW_IMPORT_BOARD_PRESET
In non-project mode (PR design flow), after creating the static design the type of the board is set.
NOTE: the definition file for mitx must be installed accordingly in order to get this work
See link: http://zedboard.org/support/documentation/2056
Istvan Csomortani