most people to ask what you asked deliberately reboot OH often - which is a total no-go - and need to understand first that they must not do that.
you should run on UPS anyway so there should be a very rare real need left
Finally to handle that case as well, you need to find out what is the trigger.I don’t know if the KNX binding initializes everything on startup but would doubt it does as I have not heard anyone mention that to date.
And if it does not, OH does it because of your own code, i.e. your rules, your persistence setup etc, so you yourself must know the reason.
Your question/explanation was not good and comprehensive enough to understand what you actually are asking for. Noone on the forum knows how your system is setup but you yourself.
For example, if you have configured persistence on that scene item to apply restoreOnStartup, that’s what OH will do. Guess what that’ll cause.