strange results of history command list

[AV]

This is on fedora 40, a fresh 'everything' network install.
I always update/upgrade manually using 'sudo dnf --refresh upgrade'.
To save typing I would scroll through the command history using the
arrow keys.
But 'sudo dnf --refresh upgrade' is no longer listed!
All other commands I used are still listed, but not this one.
Can somebody explain?

AV