Thank you for deleted documents info that is helpful.
We know there is a period closing, but does it allow selected users to change/delete/add transactions in the closed period after closing?
Going to a transaction to see changes does not resolve the most critical use case. Example it is May 2019 and as part of accounting procedures beginning balances are checked. It is discovered today that December 2018 ending balance is wrong in 3 accounts, though unchanged on Dec 1. Need a way to find changes done between April 1 and April 30 2019 to those 3 accounts on transactions with posting dates between Dec 1 and 31, 2018. Currently, it would mean going to ledger for all 3 of those accounts and examining each transaction individually. The Deleted Documents view more generalized with more/better filters would do the trick as it can show all transactions by modified date and transaction date.
Hope clarifies some more and maybe there is a way to do, we have not found as have only been live with ERPNext for 2 months.