ScriptBuilder events created at time zero can't be moved to a different time.

[jdalbey]

Steps to reproduce: Create a new incident. Create CAD event at time zero. Create Tow event at time zero. In the time selector, set Seconds to "20", click "Save and Close". Observe the event did not move to time ":20".

If there is only one event in the entire incident and it is at time zero, it makes some sense to not be able to move it, but at least there should be an explanatory error message.
But if there are multiple events at time zero, moving one event to a later time should be a reasonable action. Currently it doesn't move it and doesn't give any feedback explanation.