Problem: It is possible to output fields from a parent post on the child post page in the content area, but used on other parts of the same page they are not output.
Solution: Outside the content area the context of what is the current post is lost and so the relevant parent cannot be determined from the id="$post-slug" attribute.
The solution is to move the shortcodes which output fields of the parent into a new content template (unassigned) and to insert this content template into the child page using wpv-post-body and the id attribute to specify the child post id to re-establish what the "current" post is.
Relevant Documentation: https://toolset.com/documentation/user-guides/displaying-fields-of-parent-pages/
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