Hi again,
First let me thank you for your time.
When you purchase PD8 you have two purchase options the full price or the Upgrade option if you already have a previous version (in this case I had previously bought the v.7).
Since the upgrade version is cheaper usually the software during the installation will either look for a previous version before installing or will ask for the previous version activation key.
But since my last post I went ahead with the installation... the program only requested the PD8 activation key, it never look or ask for a proof of a previous version...