Hello, we have the WC-vendors pro simple auction plugin, and are having trouble with the Buy It Now Price. If someone changes the Buy it Now Price, the website reflects the Change, but not the Cart, there must be some integration missing. Can you help, I found this one line in functions.php, and below that comes from the plugin code.

functions.php

add_filter( 'wcv_simple_auctions_start_date', 'custom_wcv_auction_start_date');

// Buy it Now Price
		WCVendors_Pro_Form_Helper::input( apply_filters( 'wcv_simple_auctions_buy_it_now_price', array(
	            'post_id'               => $post_id,
	            'id'                    => '_buy_it_now_price',
	            'label'                 => __( 'Buy it now price', 'wc_simple_auctions' ) . ' (' . get_woocommerce_currency_symbol() . ')',
	            'data_type'             => 'price',
	            'wrapper_start'         => '',
	            'wrapper_end'           =>  ''
	            ) )
	    );