No it doesn’t. They will likely be overwritten. However, if the date stamp is old they probably can be deleted and won’t reappear.
As background your network is on the zstick. Likely devices were not removed properly, or the XML would have been deleted. What I would advise to start is to get the free Silabs Simplicity Suite and use it to remove any old devices from the stick. Review this post [SOLVED] Unresponsive Z-Wave Network: Tools and Approaches to track down the issues - Tutorials & Examples / Solutions - openHAB Community.
Also (as a minor note) if the devices were not removed properly there could be orphan links that contribute to excess activity. In karaf check openhab:links orphan list then purge