I honestly don’t really have a clue at this point. It could be any number of things an I don’t even know where to start guessing. There must be some difference between the two installations that causes the data to not exist on one of them. As a starting place, either the value really does not exist for the post or maybe the field name is different and on the server where you’re seeing it missing ACF is storing in in one place while you’re trying to get it from another. After that I wouldn’t even know what direction to go in.
