ACF All Import Pro Setup

functions.php

/**
 * Add custom field info to Media attachment after import from All Import Pro
 */

function my_attachment_uploaded($pid, $attid, $filepath){
    $attachment = get_post($attid);
	$embed_content = '<!-- wp:acf/pinellas-pdf-embed \{"id":"block_619bf48i9iq90ie09qi09e","name":"acf/pinellas-pdf-embed","data":\{"field_60da08c0ddbb4":"'.$attid.'"\},"align":"","mode":"preview"\} /-->';
	$prev_url = get_field(previous_url, $pid);
	$prev_date = get_field(date_imported, $pid);
	$prev_by = get_field(imported_by, $pid);
	update_post_meta( $attid, 'previous_url', $prev_url );
	update_post_meta( $attid, 'date_imported', $prev_date );
	update_post_meta( $attid, 'imported_by', $prev_by );

	$my_image_meta = array(
		'ID'		=> $pid,	// Specify the image (ID) to be updated
		'post_content'	=> $embed_content	// Set image Caption (Excerpt) to sanitized title
	);
	wp_update_post( $my_image_meta );

}
add_action('pmxi_attachment_uploaded', 'my_attachment_uploaded', 10, 3);