The new owner has to use the elc to register their dongle with its content.
That’s not a Steinberg product, so even if that company uses the ELC, it would not be in the Steinberg database.
No worries on that. It is not.
See the Forum Guide (New here? Read this.)
Also as an fyi. see this: License management and the future of the eLicenser - changes ahead - Announcements - Steinberg Forums