Following the example for node references using the auto complete widget, I could finally save reference to other nodes. Now, imagine the opposite, I want to remove a reference, what should the format for that be? I tried just remove sections from the fields JSON object but actually it doesn't change anything.
For example, this is the current data:
{"und":[{"nid":"[nid:431]"},{"nid":"[nid:561]"},{"nid":"[nid:563]"}]}
An this is a simple change
{"und":[{"nid":"[nid:431]"},{"nid":"[nid:561]"}]}
But if I execute the PUT with this data, I keep the same old value. Any one know how to fix that?