Hi Bradley,
Good to know that you have done extensive testing (2000 !!) for the ChaRM setup, which is phenomenal.
You can permanently delete the Change Documents that you do not need any more using CRM_ORDER_DELETE report via SE38. You can find which documents were deleted using table CDHDR via SE16. CHANGE_IND is D for DELETE action and OBJECTCLASS is CRM_ORDER.
Regards,
Vivek