I now have issues with Categories and Tags after I installed WooCommerce. I had a custom Post Type for 'Products' before WooCommerce. After installation, my post type was taken over. All of my products moved into the WooCommerce 'Products' area.

The problem now is that I have two Categories and Tags sections in my admin, which is affecting user searches etc, so I need to keep using my old categories and tags instead.

enter image description here

Is there a way to hook into WP or Woocommerce to use my Old Tags and Categories globally? Or do I have to go through and change each instance of the code below:

// OLD Tags (Keep this)
wp_get_post_terms($post->ID, 'product-tags', array("fields" => "all"));

// WooCommerce Tags (Empty, Do Not Use These)
get_the_terms( $post->ID, 'product_tag' );

Here is what it looks like now in the when Editing Products:

enter image description here

  • Have you brought this issue up with the developers form WooCommerce? – Ethan O'Sullivan Oct 30 '16 at 1:43
  • Not yet, but I will now... – Hector Oct 30 '16 at 15:07
  • I got same problem. I had a look on table used by WooCommerce. WC products are saved like posts with post-type 'product', so you can't create same custom post-type (in fact : you can't use same slug as the one used by WC). Hope it will help. – geve2009 Dec 7 '17 at 14:27

I was able to resolve this issue by changing the rewrite slug from product-tag to product_tag when registering the taxonomy. It looks like WP does not like the hyphen and prefers the underscore.

$args = array(
        'hierarchical'          => false,
        'labels'                => $labels,
        'show_ui'               => true,
        'show_admin_column'     => true,
        'update_count_callback' => '_update_post_term_count',
        'query_var'             => true,
        'rewrite'               => array( 'slug' => 'product_tag' ),

register_taxonomy( 'product-tags', 'product', $args );
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