26B - Event Changes (Server Error)

Summary:

We are having issues around Events and also what the system does expect us to do in scenarios where a session is changed.

Content (please ensure you mask any confidential information):

When we are creating events and publishing them, we are either been told of changes to the time, date, room, instructor; or it may be that we have made a mistake and need to correct it.

When we go in to change it, we receive an error saying Server Error and it does not save. Is this correct behaviour (we shouldn't be doing it) or is this a bug?