[WooCommerce] Price Variations mixed min/max

Hi all!

I have been working on a problem since yesterday noon and cannot seem to fix it. I upload products with CSV Product Import Suite to WooCommerce and want to display only the min price for variation products in the product list.

To achieve this I edited my child theme’s function.php with

<?php
// Use WC 2.0 variable price format
add_filter( 'woocommerce_variable_sale_price_html', 'wc_wc20_variation_price_format', 10, 2 );
add_filter( 'woocommerce_variable_price_html', 'wc_wc20_variation_price_format', 10, 2 );
function wc_wc20_variation_price_format( $price, $product ) {
$min_price = $product->get_variation_price( 'min', true );
$max_price = $product->get_variation_price( 'max', true );
if ($min_price != $max_price){
$price = sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $min_price ) );
return $price;
} else {
$price = sprintf( __( '%1$s', 'woocommerce' ), wc_price( $min_price ) );
return $price;
}
}
?>

This removes the display of the price range as well as the strikethrough.

However, for some variable products it works, for some it still shows the max price! I can only get to display the min price when I click edit product and immediately update it without making ANY changes. It does not work for quick edit though.

Does anyone have a workaround for this? Manually editing and updating myriads of products is just not feasible .

Any help is much, much appreciated!

Thanks