Yeah, that status would have remained with the Battle.net account it came from. Odd that you have the Netherwhelp, but my guess is you may have had the physical item still when you had the license moved so the Netherwhelp would have been able to be added to your current collection on this account.
From what I can see you fully transitioned all licenses off that account. I don’t know if it would be recoverable at this point. You can certainly submit a ticket to ask, our account service staff would be able to check.