Thank you for the reply. I understand you seek to guide how to backup this information.
While it certainly is inconvenient to loose this data (I will simply use a text file, shared with syncthing from now on), I do wonder if I did something wrong, if KOrganizer malfunctioned, or data retention simply is not supported from one version to the other.
Backups are great, but for menial stuff like this one has to consider the time and complexity spend on backing up. Backups can become a science in itself: When, how and where to backup. Using radicale is in my world a very simple means of introducing some convenient redundancy into my live. It spreads a copy of some basic data onto 4 devices (VPS, Laptop, PC, Mobile phone). The VPS has it on backups, but I could not be bothered to revert as I deem the data not important enough for it to be worth the effort. Also, if the automatic backup happened at the wrong time, bad luck.
There has been some effort getting users form Windows to Linux triggered by Windows 10 end of live. Tumbleweed can not be the first choice for inexperienced users (at least the KDE version). Some basic things like an update not deleting basic information is simply to weird of a problem to have (We are not talking about a computer blowing up, hard disk crash; data is gone after an update).
I do not know if this would happen in Leap as well, but i feel dirty advising user to go for leap. Last time I checked (about 10 months ago) Leap came with Kicad v4. KiCad. Version. 4. When i saw this, i wanted to start crying. I hope nobody got tricked into using that version and changed OS.
Maybe slowroll will solve a lot of these issue, but i feel that is not relevant. What caused the issue? How can it be prevented in the future? If this is by design, maybe the user should get a message/warning of some sort?
I would be happy to create a Bug report somewhere, but would first like to make sure I do so meaningfully. Maybe this is an OpenSuse issue after all…? Any thought on how to understand what happened (or even fix this) is welcome, maybe there is still some useful log left… If not for this time, then for next time. I have a feeling this will happen again.