Archive, need to have more details

I'm not sure to understand something.

I have this config :
- target_preserve_min latest
- target_preserve 3d

Today, I have 3 **backups**
- 2020-01-01
- 2020-01-02
- 2020-01-03 (today)

I run a **archive** command, so I should have in archive folder :
- 2020-01-01
- 2020-01-02
- 2020-01-03

Now, we are the 2020-01-12, I run a new backup. So I should have
- 2020-01-12

Now I run **archive**, logicaly I should have :
- 2020-01-12

But how that work, archive command will remove the old and will resend **all** ?
Or the system can still do the difference between the last archive 2020-01-03 and send the difference only ?

Start with the documentation for the archive command and the target_preserve_min and target_preserve settings. Clarify the example's expected archive contents and state whether archiving after retention removes old archives and retransfers all backups or preserves an incremental difference from the last archive.

Written by the indexing model from the issue text.