Should I keep old registry backups from another program after installing CSC?

I currently use Eusing Registry Cleaner which takes up little space on the HD. I plan to uninstall and delete its related files and switch to CSC. Is it a good idea to do this, to save HD space? I have many old Eusing registry backup files (from early 2009). but would like to try CSC without risk of losing anything.

Also, since I don’t share my computer, can I omit certain CSC components,like the privacy element?


Back ups going back to 2009 is a long time in my view for a registry cleaner. I would suggest to limit to 3 months…