Can someone explain how to get this 'foot fix" result when cleaning up motion data as documented in the manual

http://manual.reallusion.com/Curve_Editor_Plug_in/ENU/Default.htm#Curve_Editor_1/Curve_Editor/Application_Mocap_Data_Cleaning.htm

For some reason, when i create the dummy targets, they  move with the root instead of locking in world space.
This is pretty annoying and a big deal as it was one of the main reasons for me investing into the live motion platform.  

Thanks,

Iwan