What is supposed to happen after I refresh keys?

[Jerry]

FreeBSD 11.4 / amd64
gpg (GnuPG) 2.2.20
libgcrypt 1.8.5

This is probably a stupid question, but precisely what is supposed
to happen after running "gpg2 --refresh-keys"?

This is the log file created from running the above command:

https://www.seibercom.net/logs/RefreshKeys.txt

If I run the same command immediately after it completes its
first invocation, the same log file is created. I thought that
running 'refresh-keys" would remove deleted keys and update those that
had new expirations dates or other modifications. Obviously, I must be
in error. So, precisely what does the command accomplish?

Thanks!

-- 
Jerry
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