v4 I have questions
 

I was given a license by another member and the license is current on my forum. However it comes due in April and I would like to upgrade to v4 and I would like to know what I need to do to have the license transferd. What issues I might run into. Also, do I need to buy an upgrade or do I have to buy the complete license. The current licensee is leasing, I want to purchase.