Hi everyone, I have been using w10 pro for 8 months both on my desktop and laptop. I want to make a fresh install on both of my machines. I had used daz, activated 7 and fresh installed w10. Finally used GenuineTicket.xml trick. Is it okay to format all harddrives and make a full installation or should I backup GenuineTicket.xml before starting the formatting process? I mean in installation process, do I have to write any keys or skip it?