I had the exact same problem with my shipped Aussie spotted duck eggs, only one developed at all & it has a saddle air cell, all of them had detached air cell & now my little one that made it is going into lockdown on sunday. I am going to paste sallys advive on here, she is the person who wrote the article & started the diary & notes air cell detached shipped eggs. shes awesome & if she doesnt have the answer then usually someone else on the thread does. i also am going to attempt to paste the link for that thread too..... https://www.backyardchickens.com/t/...ell-detatched-shipped-eggs/6410#post_10600826