I was just making assumptions on this. Like I said I haven't had this happen to me ever because I run my eggs at low humiditys. I also can't see the egg for my self so that makes things slightly harder to judge what actually is happening.Well, now, you've got my attention. I have never heard of sucking out moisture from an egg. I'm curious, how big is the air cell? I can't figure how the water got in there in the first place. Even at 65% humidity the air cell would grow, just not fast enough to allow the chicks to hatch without problems, so why is there water in there?
Have you been misting the eggs?
OH, one other thing. It's day 19 !! I doubt there is time to extract enough water to allow the chicks to hatch, but if you could, this is probably the only chance they'd have.