Hey Andy,
Right. You can view the filters on
http://api.shopify.com/order.html#index
and note the default values (status is defaulted to open).
The financial_status filters for 'refunded' and 'voided' have been
added, so you can do something like this now to get all refunded
orders:
ShopifyAPI::Order.find(:all, :params => {:status =>
'any', :financial_status => 'refunded'})
Denis