Overwrite Tasks edited in Notebooks

### User Story

As a user, when I edit a task I previously created, I don't want to have a new task created and my original one made inactive so that if I am using the original name as part of my regular reporting procedures, my procedure isn't broken.

### Acceptance Criteria

**Given** that
I have edited a task in Notebooks
**When**
I export (save) the task
**Then**
a new task does not get created and the original task just gets updated (with the same name)

### Notes

The intention of making a new task and keeping the original is good. Being able to preserve the script as it ran for viewing history is important. Being able to revert changes to a previous revision is good and the current method would allow that.

But we may have to do this in the interim until we get a more elegant way to version & name the tasks and provide metadata and ways to make them easier to find and track. I am suggesting this ticket as only an interim solution.