Thanks Jamie and Elliot. This answered my question
For anyone else interested in passing field data between pages while using a drop down menu to connect the pages together, here’s one way to do it:
Get field data from another page via drop down menu:
Page A (master page)
Page B (sub-page): Linked to Page A via drop-down menu
Create a post object field on Page B’s ACF called ‘select_page’
In order for Page B to access field data from Page A:
Add something like this in Page B’s php code:
<? $pages = get_field('select_page');
get_field('content_from_page_A', $pages->ID);
?>
