 the old one will run without modification. [Computer and Information Sciences] 
n., The use of one system to reproduce the behaviours and results of another system. [General Dictionaries] 
entity 
n., A prospective record encoded in machine language that is actively involved in carrying out an action or process. With dispositive, instructive, narrative, probative and supporting, one of six functional categories of records. [Archives] 
evidence 
n., The process of binding together a digital document or othe