Hi Paul, thanks for your comment! The way you have described how alias beers work is correct, and you should, as you say, be able to assign the stock to either product as they share the same stock pool. There is a possibility that there could potentially be an error with the setup of the Alias product. I would be very happy to investigate this for you and find out what’s happening here! If you could raise a support ticket, and grant us access to your account, that would be great, and I’ll investigate this further! We do also have a Alias, derived & guest beers help guide that you may find useful!