I personally have found that any shipped egg that survives to day 18 lockdown has an awkward but re-attached air cell so I lay my eggs down for hatch. Please refer to day 18 lockdown for more information on why laying eggs for hatching after day 18 is the best way to go.
REMINDER~ Never Set COLD eggs in the incubator.
Below image are Eggs in A Carton with Bottoms cut out for Ventilation
Below image of Turning damaged air cell Shipped Eggs, just lean to opposite side.