Not able to re-assign level 1 expense report approvals assigned to purged Operator ID

IB messaging from HR sends a termination message to PS and Security.  This triggers an automatic scrample and purge of the Operator ID.  The Expense Workflow Admin is not able to re-assign expense reports that are assigned to the Operator ID after the Operator ID is purged.  Has anyone else had this problem?  Is there a delivered process that we can tap into that would automatically re-assign any pending expense reports to a Expense Workflow Admin worklist pool enabling the Workflow Admin to compelte the re-assignment?