Not Working - Unrelating or Removing Related Data

Hi All,

Based on the documentation below -
http://wiki.dreamfactory.com/DreamFactory/Features/Database/Related_Data#Unrelating_or_Removing_Related_Data

I am trying to remove the directly related records from related tables and from junction table. According to me I am doing exactly what is required.

Do we need to PATCH or DELETE?
Anyways both the cases don't work for me - I am on the latest v2.6.

Kindly suggest!!

Thanks
Saurabh