Upgrade Question Bdis 2015 To Bdts 2015

I am currently using BDIS 2015 on my W7-SP1 computer.


I have a couple of upgrade questions.


I went to the Btidefender website and then clicked on Renew Upgrade under Home Users. I selected upgrade to BDTS one user for one year. The Total cost shown is $59.95.


I have 445 days remaining on my current BDIS 2015 license.


1. If I purchase the ugrade to BDTS 2015 for one year for $59.95 will I then have a license for BDTS for 445+365 or 810 days?


2. Is there a way to upgrade from BDIS 2015 to BDTS for less than $59.95 will keeping my 445 days remaining on my current license?


Thanks