functions.php

<?php

add_filter( 'field_editor_dp_skip_conversion', 'allow_fe_to_convert_job_expires' );

function allow_fe_to_convert_job_expires( $skip_fields ){
	
	$key = array_search( 'job_expires', $skip_fields );
	
	if( $key !== false ){
	    unset( $skip_fields[$key] );
	}

	return $skip_fields;	
}