Not saving multiple backups

I have a scheduled backup job saving to the local file system. I configured it to never delete old backups and to use strftime. I expected my backup folder to contain multiple copies with datetime string’d names but instead I only have one copy being overwritten every time.

What gives?

May have found my answer. https://www.virtualmin.com/node/9127

Clicking to use strftime- in file names and never delete old backups does not give the impression that further configuration is required. The assumption was that the system would handle file naming.