Re-Using Unique IDs

Here's the scenario:

1) Business rules dictate that the Unique ID of a task is the
identifier for systems outside of MS Project.
2) A task is deleted by accident 2 months ago.
3) A new task is established that is a copy of the deleted task.

Question: Is it possible to set the Unique ID of the new task to the
Unique ID of the deleted task?

My initial response would be "No". I don't think there is an "easy"
way. However, a more rigorous way would be to take the current file
and (via code)...

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