<ul class="treeview-menu" id="sub_nav" data-hook="admin_product_sub_tabs">
  <%= tab :products, :match_path => '/products' %>
  <%= tab :option_types, :match_path => '/option_types' %>
  <%= tab :properties %>
  <%= tab :prototypes %>
  <%= tab :taxonomies %>
  <%= tab :taxons %>
</ul>

<ul class="treeview-menu" id="sub_nav" data-hook="admin_product_sub_tabs">
  <%= tab *Spree::BackendConfiguration::PRODUCT_TABS %>
  <%= tab :option_types, :match_path => '/option_types' %>
  <%= tab :properties %>
  <%= tab :prototypes %>
  <%= tab :taxonomies %>
  <%= tab :taxons %>
</ul>

Use BackendConfiguration tab in product sub menu
Use BackendConfiguration tab in product sub menu
