Closing Credit Management case folders en masse - for orders released in OM instead of CM

I have a very large number of case folders in Credit Management that were created over several years. We had Credit Management turned on but with old scoring models and checklists, and we were not actively utilizing it for releasing orders from credit check failure hold. We would release them directly in OM. 

Other than manually going into each case folder and submitting a recommendation of "No Change" because the orders were already released, shipped, and invoiced, is there any way to delete or close out these case folders and the related ARCMGTAP workflows through a concurrent process or some other means?