The problem is that this plugin is probably not away built to work with ACF and some field types will not work properly. When ACF stores a meta value it also saves a second value that holds the field key reference of that field. This field key reference is what ACF uses to figure out how the value is stored and what it needs to do to return it correctly. Some fields without this reference will work and these are the simple/basic fields. This is why some fields appear to work and why some don’t and why they work after manually updating the post.
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