No, there is no problem, you can replace only this file.
networkkey and tcLinkKey are network setting, so stored in the ini file in the backup, and stored direclty in the gateway.
Sometime thoses setting can be corrupted too, but they primarily cause connection problems.
It’s clearely an issue, the application need to avoid Segmentation fault for sure, but it take long time to find the problem, for exemple V2.32.5: deconz.service: Main process exited, code=killed, status=11/SEGV
For the moment you are alone on this version, perhaps it can be easier to remove a part of the zll.db file to avoid the issue and not restart from scratch ?