New optional filter on the migration form. Leave it off and everything is copied, as before. Turn it on and choose either:

• •In the last N days — a rolling window, so a scheduled job always carries the recent tail and nothing older.
• •Between two dates — a fixed *from* and *to*, both days included.

It works for every source: your own servers, Amazon S3, Cloudflare R2, Google Cloud Storage, and Azure. Useful for seeding a destination with just this quarter's data, or moving a specific date range without hand-picking files.

The filter reads each object's last-modified time and never drops anything it can't evaluate, so it can only ever narrow the copy — never silently skip data.