From the Zen Documentation:
SWRules: Configure the SWRules file for the Windows inventoried workstations
on which ZENworks for Desktops 3.2, ZENworks for Desktops 4, or ZENworks for
Desktops 4.0.1 is installed. Do not configure the file for the inventoried
workstations that have ZENworks6.5 Desktop Management installed.

Does this mean SWRules won't work if you're running 6.5 agent?