It’s like Deja Vu in here … seems I just read someone else in another thread wanting to cache a dup (scratching my head)
Overkill.
- Don’t worry about an answer
- Yes, overkill. No, most do NOT follow this procedure.
Most of us do the very complicated:
zypper dup
There, done 
And no need to drop out of a GUI. Overkill.
Personally, I’ve done this with TW for years - two desktops and two laptops. While logged into a KDE Plasma session, I do:
a) open up a windowed console (konsole app as I’m On KDE).
b) execute “su”
c) zypper dup
d) when finished, “exit”, then “exit” (to exit and close konsole).
e) reboot if required.
Easy peasy. No extra zypper commands that offer zero advantages.