Well I'm not much of an article reading person, I'm more of the experiment person, and I have had my share of loose and deatchable air cells, I can tell you as soon as growth has started, I lay mine down, never borther them nor has it effected them in anyway. As they get older the loose air cell will stick.. I find that ducks do much better laying down.
As far as DEATACHABLE air cells, I have never had any luck trying to get growth in them. I think once it has broken threw and is moving around in that shell like bubbles, it's a lost cause, at least for me it is.
If someone else has the secret to hatch out a deatchable air cell, I would LOVE to know how to get them to grow. Loose air cells NOT a problem.