Hello

I have a custom taxonomy called content_type where by (Sponsored Posts) is a taxonomy option, now ive hidden/excluded this (Sponsored Posts) taxonomy option in the buddyblog settings but im using this code below to auto assign the (Sponsored Posts) taxonomy when a post has been paid for on checkout.

 /**
 * Assign (Sponsored Post) category to BuddyBlog pay per post articles on checkout.
 */
add_action( 'bblpro_ppp_post_purchase_completed', function( $post_id ) {
	$post_type = get_post_type( $post_id );
	if ( 'post' !== $post_type ) {
		return;
	}
	// Get taxonomy term.
	$newterm = get_term_by( 'name', 'Sponsored Posts', 'content_type' );
	if ( ! $newterm ) {
		return;
	}
	// Assign term to post.
	wp_set_post_terms( $post_id, $newterm->term_id, 'content_type', true );
} ); 

The problem now is if I try to edit and update the published post later, the previously assigned (Sponsored Posts) taxonomy is removed after clicking the update button

How can I enable the previous assigned paid post to still remain intact when editing the post even though the taxonomy is hidden