Board Thread:Spoilers!/@comment-4877635-20150304180627/@comment-24674051-20150313165356

Did we see Emma all the way from Birth to Wardrobe? The answer to that is a resounding no. We saw David take Emma, We saw one, or two, Hallway battles, and we saw David put Emma in the Wardrobe. We have no idea how far away the Nursery (which is where the wardrobe was located) is from Snow and Charming's room. There are any number of places where David could turn aside and swap the baby (if that is the way the writers want to go). It might be a retcon if they do that, but it at least has a chance of being believable.

Having said all of that, this would then leave other questions and holes to fill. and I'm not saying that I am for (or against) this idea. Just throwing it out there for people to chew on. Even if the show does not go this way, there could be some interesting non-canon fanfiction using this scenario as a basis.