I have a lot to catch up on, so someone may have already explained this, but back around page 15 people were asking why she had to rewrite the restaurant scene after they lost the footage.
I think what they explained about this was that they lost Emma because they couldn't extend her schedule to reshoot the lost footage and thus she had to drop out (awww!

). As for the restaurant scene itself, they basically had to schedule to take over an actual restaurant for a while to shoot the scene and they weren't able to do so for a reshoot. I'm not sure if that's because of how much they'd have to pay for another go or because they couldn't get it on short notice (presumably it was originally scheduled somewhat in advance) necessary to stay within their production timeframe, or maybe both factors. Or maybe the restaurant just couldn't take the closure a second time. Anyway, since they couldn't reshoot the scene in the restaurant she had to write a replacement scene to convey the same information (I think it was shot on a boat).
So that's what I remember hearing about the lost restaurant scene.