Create an image field with the field name of “_thumbnail_id”, and ACF will just update the featured image for you.
Resources:
https://support.advancedcustomfields.com/forums/topic/set-featured-image-from-acf-image-field/
Web & Graphic Design by John Sodeyama
Create an image field with the field name of “_thumbnail_id”, and ACF will just update the featured image for you.
Resources:
https://support.advancedcustomfields.com/forums/topic/set-featured-image-from-acf-image-field/