I continue to use the Win 7 User Data Backups even after I upgraded from Win7 to Win10. I do not use the File History Backups offered with Win 10. My question regards the datasets saved by the Win7 Backup procedure. I notice my backups include multiple dated Backup Sets dating back to when I started using my current external hard drive, in about 2 week increments. My question is, do I need to keep all those Backup Sets forever, or can I delete old ones without losing any data. My backup folder (containing those dated Backup Sets) has grown to about 200GB in just a few months. Would appreciate your advice. Thanks.