'Upgrade' versions

Hi

I’ve got CorelDRAW Graphics Suite 9 and I’m looking to upgrade to version 12.
The thing is, ive lost my card thinger that had my serial number on it which came with version 9… ive still got everything ELSE, just not the serial (corelDRAW never asks for a valid serial). its all legal and everything… just… am i eligible for an UPGRADE VERSION?

i need to know.

thanks.