Problems with image type field

Hello, I have a problem with the image field, using the example below when editing a post and change any other field and post update the image that is saved in image fields are lost.

function your_prefix_get_meta_box( $meta_boxes ) {
	$prefix = 'prefix-';

	$meta_boxes[] = array(
		'id' => 'untitled',
		'title' => esc_html__( 'Untitled Metabox', 'metabox-online-generator' ),
		'post_types' => array( 'post', 'page' ),
		'context' => 'advanced',
		'priority' => 'default',
		'autosave' => false,
		'fields' => array(
			array(
				'id' => $prefix . 'text_1',
				'type' => 'text',
				'name' => esc_html__( 'Text', 'metabox-online-generator' ),
			),
			array(
				'id' => $prefix . 'image_select_2',
				'type' => 'image_select',
				'name' => esc_html__( 'Image Select', 'metabox-online-generator' ),
				'force_delete' => false,
				'max_file_uploads' => '4',
			),
			array(
				'id' => $prefix . 'image_4',
				'type' => 'image',
				'name' => esc_html__( 'Image Upload', 'metabox-online-generator' ),
			),
		),
	);

	return $meta_boxes;
}
add_filter( 'rwmb_meta_boxes', 'your_prefix_get_meta_box' );