Delete Shop Order requisitions

Hello all, 

I have a need to delete several hundred Shop Order Requisitions in IFS Apps 10. All of them have Shop Orders that have already been created and closed. It appears that I do have the capability to delete the requisitions, however, I am concerned that there may be some issue with simply deleting them. I need to keep the Shop Orders themselves for history reference. 

Are there any potential issues with simply deleting a shop order requisition that has been converted to a Shop Order, which has been completed and closed?

Thank you!