Prevent the product name, product description and product excerpt from being overwritten during a Product Set update. [datafeedr]

prevent-content-override.php

<?php

/**
 * Prevent product titles, descriptions & excerpts from being overwritten during Product Set updates.
 */
add_filter( 'dfrpswc_filter_post_array', 'mycode_prevent_product_title_content_excerpt_override', 999, 4 );
function mycode_prevent_product_title_content_excerpt_override( $post, $product, $set, $action ) {
	if ( $action == 'update' ) {
		unset( $post['post_title'] );    // Prevent title from being overwritten.
		unset( $post['post_content'] );  // Prevent description from being overwritten. 
		unset( $post['post_excerpt'] );  // Prevent excerpt from being overwritten. 
	}

	return $post;
}