you can totally migrate your scores. https://github.com/DoubleDee73/UltrastarScoreImporter
It may be a bit finnicky for the unexperienced user, but you can check out "say something" and look for a Discord server invitation and head over there for help.
Unfortunately the CMD version can't read it. It works with a newer version, but because of the points we've earned over 14 years, I don't want to replace CMD. 😞
It wasn't easy, but YouTube helped me to open the jar file. Thank you very much for your help.