I think, there are not many alternatives to this, I also tried a lot to convince the Heart telling me it’s secrets.
At least all this was very instructive.
The best way seems to start a documentation from the beginning and update it at every change, something I seem to forget during my whole life.
I remember we were talking about this some time ago.
As of backing up configuration, I’m not sure, if backing up the complete Z-Wave controller regularly and then later restore it in case of a malfunction would not bring back the early state of an unnoticed error.
If backing up all automations was possible, I think restoring them to a fresh Heart would lead to lots of unknown devices in them, so you have to pick every device seperately again, so no time is saved.
Anyway, today’s the day, waking up this morning finding the Heart in a coma again speeded up my decision-making.
I will start up using this (thanx @Exxpert) and this guide, hoping to find it was worth the effort at the end.