Discretized axons locked - how do I delete/unlock Neuron model objects?

[cbenj33]

Seems like a simple thing, but after I discretize a locked nerve trajectory, the associated Neuron model object will also be locked. This prevents me from being able to delete that model object or group that model object without creating a duplicate. This is frustrating as I need to keep model objects organized, and want to be able to experiment with different Neuron models without keeping all iterations.

How do I unlock or delete discretized neuron model objects?