Combining product upgrades

I'm a longtime Webroot customer, love the products.  As time has gone on, my former Spysweeper product has been upgraded to Webroot SecureAnywhere, while my Window Washer program which is no longer supported has not been upgraded.  They are on different renewal schedules.  If I upgrade from Windows Washer to Webroot Secure Anwhere Complete, what will happen to my other Webroot SecureAnywhere subscription, which has another six months to go?  Will it be extended, or will I have multiple subscriptions?  Can I get a refund on it?  Trying to simplify the two programs into one, but it's not clear how do this easily without being double or triple charged for programs.