Hi Suyash,
Have you tried using observe point? it is sort of a hybrid tool for both your marketing tags and implementation. Usually Auditing a Property would heavily rely on the original blueprint. You can use that to see if the tracking solution your client has in place is still sustainable or requires a clean up, then document the steps you take to achieving a clean environment and put that down as best practices going forward. URL: https://www.observepoint.com/
