Halion Sonic 2 Upgrade path Halion Sonic 2 SE

Is there any upgrade path to Halion Sonic 2 from Halion Sonic 2 SE? or do I have to buy the Full version?

No, you have to buy full version.

It looks as though it works out cheaper for the activation code if you already have the demo disks £162, instead of £203.
I had the demo disks included in my Cubase box.