it has been our BIG problem and has been requesting cyberlink to come up with a solution to this.
maybe cyberlink can give us all a base installer once we have upgraded. like for example, if we have upgraded from 9, they can give us the full installer of 11 (if we upgrade to 11) and so on and so forth. that way, we don't have to install everything from the first full product purchase and then upgrade, upgrade, upgrade, and the endless upgrade.
in the end, this method (of upgrading an upgrade and then upgrading again) is penalizing those who have been supportive of their products.