I’m still not sure what you’re trying to get where, your explanation did not clear up the confusion for me. My only guess is that you’re trying to get data from a post that is not the “CURRENT” post. This is the only thing that I can think of that would cause the problem you’re having. If this is not the case then you’re going to need to be more clear about what you’re trying to get where.
You can overcome this by specifying the post ID for the post you want to get the data from and using functions that allow you to specify the post ID.
For example: get_field('field_name', $post_id);, get_the_title($post_id);, etc.
