Reassigning Approvals for Terminated Employees

Summary:

For end dated or termed employees, if they are part of any approval process how the approvals can be reassigned to the any other approver in Bulk?
Step by Step test case:
Two employees are part of invoice approval process
They are no longer with the organization
They have some approvals in their queue
How these approvals can be reassigned to any other approver without any manual intervention?

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