Comment 6 for bug 1980180

Giving another end-user view, and from my own QA-testing of Lubuntu releases found on our checklist, I'm unaware of any differences.

> For example are there package management changes or configuration file changes?

I'm not a developer, but my name is found in the checklist (not as often as Leó's) and my testing post-install is identical for all releases. I'll let the devs speak to Brian's question.

We have a 'install using existing partition' which is a no-format install, so end-user manually-installed packages get re-installed, user files are untouched, which would allow a user to re-install without any real consequence & i test it almost weekly (2022-07-14 my last test using jammy/22.04.1 daily). I believe I could use that install to change a 22.04 install to kinetic & back (to 22.04 using currently dailies & the different calamares versions) without issue. I can test that if helpful.

The box I'm using now still has a 21.10/impish install, impish is now EOL & that install will become my kinetic install on this box using the 'install using existing partition'. I could switch it to 'kinetic' (newer calamares), check it out, then re-install older 20.04 using current dailies & older calamares, and I'd expect the checklist install to pass.. ie.
- my data files remain (due to lack of format in install)
- my manually installed packages will get re-installed; I use `clementine` to play music which isn't installed by default with Lubuntu, & expect that to continue playing my playlist post-install using this install method as I talked about in the 'understanding the testcases' doc.

Alas that doesn't meet Brian's concern as I read it; ie. config files for calamares will from be different releases if I performed this test, but I'd expect the user-viewpoint to be identical, being what I'm trying to say.

If some testing would be helpful; I'll do it.

FYI: Description of our testing checklist can be found here https://discourse.lubuntu.me/t/testing-checklist-understanding-the-testcases/2743