If a document is deleted in Appian, but I have a backup of the file in the backend, can it be recovered?

We are trying to clean up unnecessary documents in our Appian instance. We would like a way to do this process but also have a way to recover the files that we delete if we need to roll back. Is there a process we can go through to backup Appian documents on the backend? We are on-premise. I am concerned that when they are deleted on the front end, then the metadata will be gone from the meta-database and they cannot just be put back in the backend folder system.

Thanks