# Incremental Archive ## Implementation - Add `ModifiedDate` property to the JSON metadata saved in each workspace folder - Use Scanner API to detect which items in the service have a `ModifiedDate` more recent than the latest archive ## Challenges / Potential Issues - Make the latest copy of an item display in all "future folders" without duplicating the file (symlink, maybe?) - Avoid automatically deleting the only copy of an item simply because its last modified date falls outside of the retention period range ## Ideas - [7zip Incremental/Differential Archive](https://nagimov.me/post/simple-differential-and-incremental-backups-using-7-zip/)
