LDCad Flex part>Motor cable not editable?

[Jetro de Château]

I was referring to the two little diamond shapes you can see on all the other cables (sensors, light, ...). Those are not present on the motor cables for some reason.

I see no diamond shape, only spheres (local stiffness control) that are partially burried in the straight cable of sensors, but are fully visible with the bent cables of motors.

Now I see... They looked like diamonds to me because they are partially buried inside the ridges of the cable.