How to update existing avast version to a new version?

Hello!
I have purchased avast!PRO ANTIVIRUS in the past, but now have noticed that a new version has come out - avast!INTERNET PROTECTION, which would be so better for our business. The current version is still valid, do I have to wait until it runs out to be able to get the new version, or is it possible to update a version?Thanks!
nele

You don’t have to wait, but you need to pay for an AIS license.
You can’t upgrade from Pro to AIS for free.

Edit: Or are you talking about avast! Business Protection…??

I don’t think there is a migration license from Pro to AIS.
But you can try at
http://www.mailonpix.com/images/8cfee2216867075618613c471b1bdd0f.gif

In fact there was a promotion where you could get a cross-upgrade discount if you had an existing license, im not sure if this is still going on for end users

I checked on this and you should be able to get a 50% discount when upgrading to the new business product line (Business Protection, Business Protection Plus)