Q:
Quick question on Pre-purchase HoT
A:
It is not. You can upgrade to the Deluxe Edition through the Gem Store, but the Ultimate Edition must be purchased in toto.
You might contact the CS Team via the ‘Support’ link above/below and ‘Submit a Request’ to ask about refunding your current pre-purchase and then pre-purchasing the Ultimate Edition. Make sure to indicate you do not want to refund your core account.
Good luck.
ty for replying quickly