Upgrade from v3.7 to v6?

I am currently running Winclone 3.7 to backup Win10. Can I upgrade directly to WC6 or do I need to do a fresh install of WC6? If so, will my 3.7 files be accessable?

Winclone 3 and Winclone 6 run completely separate from each other. You cannot update W3 to W6 within the app. W3 images can be dragged into the W6 app.