Sorry I do not have an answer, just a similar kind of question. I own Studio One Pro version 4. If i purchase 1 year of Sphere membership, and do not renew after 1 year, what happens? Can I continue using verion 6 or must I reinstall version 4 and deal with possible backward compatibility issues. PreSonus I think needs to do a better job of explaining what happens when you cancel Sphere and if for example there is a difference if you cancel after one month or after a year or two.